A citation is a reference to a source. More precisely, a citation is an abbreviated alphanumeric expression embedded in the body of an intellectual work that denotes an entry in the bibliographic references section of the work for the purpose of acknowledging the relevance of the works of others to the topic of discussion at the spot where the citation appears.
47-438: Generally, the combination of both the in-body citation and the bibliographic entry constitutes what is commonly thought of as a citation (whereas bibliographic entries by themselves are not). Citations have several important purposes. While their uses for upholding intellectual honesty and bolstering claims are typically foregrounded in teaching materials and style guides (e.g.,), correct attribution of insights to previous sources
94-450: A status bar . Microsoft 's tooltips feature found in its end-user documentation is named ScreenTips . Apple's tooltips feature found in its developer documentation is named help tags . The Classic Mac OS uses a tooltips feature, though in a slightly different way, known as balloon help . Some software and applications, such as GIMP , provide an option for users to turn off some or all tooltips. However, such options are left to
141-475: A tooltip . This style makes citing easier and improves the reader's experience. Citation styles can be broadly divided into styles common to the humanities and the sciences, though there is considerable overlap. Some style guides, such as the Chicago Manual of Style , are quite flexible and cover both parenthetical and note citation systems. Others, such as MLA and APA styles, specify formats within
188-417: A brief text in which the author comments on the subject and themes of the book and names supporting citations . In the editorial production of books and documents, typographically, a note is usually several lines of text at the bottom of the page , at the end of a chapter, at the end of a volume, or a house-style typographic usage throughout the text. Notes are usually identified with superscript numbers or
235-412: A citation is actually supplementary material, or suggestions for further reading. Parenthetical referencing, also known as Harvard referencing, has full or partial, in-text, citations enclosed in circular brackets and embedded in the paragraph. An example of a parenthetical reference: Depending on the choice of style, fully cited parenthetical references may require no end section. Other styles include
282-438: A citation on Misplaced Pages "could be considered a public parallel to scholarly citation". A scientific publication being "cited in a Misplaced Pages article is considered an indicator of some form of impact for this publication" and it may be possible to detect certain publications through changes to Misplaced Pages articles. Wikimedia Research's Cite-o-Meter tool showed a league table of which academic publishers are most cited on Misplaced Pages as does
329-494: A complete sentence-idea before having their attention redirected to the content of the note. The cue is placed after any punctuation (normally after the closing point of a sentence). ... Notes cued in the middle of a sentence are a distraction to the reader, and cues are best located at the end of sentences. Notes are most often used as an alternative to long explanations, citations, comments, or annotations that can be distracting to readers. Most literary style guidelines (including
376-447: A consensus on it. Because of this, MediaWiki , for example, has had to introduce its own <ref></ref> tag for citing references in notes. It might be argued that the hyperlink partially eliminates the need for notes, being the web's way to refer to another document. However, it does not allow citing to offline sources and if the destination of the link changes, the link can become dead or irrelevant. A proposed solution
423-401: A general Internet meme . The tool scite.ai tracks and links citations of papers as 'Supporting', 'Mentioning' or 'Contrasting' the study, differentiating between these contexts of citations to some degree which may be useful for evaluation/metrics and e.g. discovering studies or statements contrasting statements within a specific study. Note (typography) In publishing , a note is
470-403: A list of the citations, with complete bibliographical references, in an end section, sorted alphabetically by author. This section is often called "References", "Bibliography", "Works cited" or "Works consulted". In-text references for online publications may differ from conventional parenthetical referencing. A full reference can be hidden, only displayed when wanted by the reader, in the form of
517-420: A literary device. Tooltip The tooltip , also known as infotip or hint , is a common graphical user interface (GUI) element in which, when hovering over a screen element or component, a text box displays information about that element, such as a description of a button's function, what an abbreviation stands for, or the exact absolute time stamp over a relative time ("… ago"). In common practice,
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#1732780547652564-471: A number of different guides exist. Individual publishers often have their own in-house variations as well, and some works are so long-established as to have their own citation methods too: Stephanus pagination for Plato ; Bekker numbers for Aristotle ; citing the Bible by book, chapter and verse; or Shakespeare notation by play. The Citation Style Language (CSL) is an open XML-based language to describe
611-420: A page by the "Academic Journals WikiProject". Research indicates a large share of academic citations on the platform are paywalled and hence inaccessible to many readers. "[ citation needed ]" is a tag added by Misplaced Pages editors to unsourced statements in articles requesting citations to be added. The phrase is reflective of the policies of verifiability and no original research on Misplaced Pages and has become
658-428: A symbol. Footnotes are informational notes located at the foot of the thematically relevant page, whilst endnotes are informational notes published at the end of a chapter, the end of a volume, or the conclusion of a multi-volume book. Unlike footnotes, which require manipulating the page design (text-block and page layouts) to accommodate the additional text, endnotes are advantageous to editorial production because
705-402: A user hovers the pointer over an item without clicking it. On touch-screen devices, a tooltip is displayed upon long-pressing—i.e., tapping and holding—an element. Some smartphones have alternative input methods such as a stylus , which can show tooltips when hovering above the screen. A common variant of tooltips, especially in older software, is displaying a description of the tool in
752-596: A variety of reasons: The US Government Printing Office Style Manual devotes over 660 words to the topic of footnotes. NASA has guidance for footnote usage in its historical documents. Former Associate Justice Stephen Breyer of the Supreme Court of the United States is famous in the American legal community for his writing style, in which he never uses notes. He prefers to keep all citations within
799-502: Is a reference to a book, article , web page , or other published item. Citations should supply sufficient detail to identify the item uniquely. Different citation systems and styles are used in scientific citation , legal citation , prior art , the arts , and the humanities . Regarding the use of citations in the scientific literature, some scholars also put forward "the right to refuse unwanted citations" in certain situations deemed inappropriate. Citation content can vary depending on
846-417: Is citation errors, which often occur due to carelessness on either the researcher or journal editor's part in the publication procedure. For example, a study that analyzed 1,200 randomly selected citations from three major business ethics journals concluded that an average article contains at least three plagiarized citations when authors copy and paste a citation entry from another publication without consulting
893-729: Is just one of these purposes. Linguistic analysis of citation-practices has indicated that they also serve critical roles in orchestrating the state of knowledge on a particular topic, identifying gaps in the existing knowledge that should be filled or describing areas where inquiries should be continued or replicated. Citation has also been identified as a critical means by which researchers establish stance: aligning themselves with or against subgroups of fellow researchers working on similar projects and staking out opportunities for creating new knowledge. Conventions of citation (e.g., placement of dates within parentheses, superscripted endnotes vs. footnotes , colons or commas for page numbers, etc.) vary by
940-569: Is the use of a digital object identifier . As of 2024, the HTML Living Standard has provided several workarounds for the inclusion of footnotes depending on length or type of annotation. In instances where a user needs to add an endnote or footnote using HTML, they can add the superscript number using <sup></sup> , then link the superscripted text to the reference section using an anchor tag . Create an anchor tag by using <a name="ref1"></a> and then link
987-700: The Modern Language Association and the American Psychological Association ) recommend limited use of foot- and endnotes. However, publishers often encourage note references instead of parenthetical references. Aside from use as a bibliographic element, notes are used for additional information, qualification, or explanation that might be too digressive for the main text. Footnotes are heavily utilized in academic institutions to support claims made in academic essays covering myriad topics. In particular, footnotes are
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#17327805476521034-465: The number sign (#), the Greek letter delta (Δ), the diamond-shaped lozenge (◊), the downward arrow (↓), and the manicule (☞), a hand with an extended index finger. Footnote reference numbers ("cues") in the body text of a page should be placed at the end of a sentence if possible, after the final punctuation. This minimizes the interruption of the flow of reading and allows the reader to absorb
1081-536: The associated reference(s). There also has been analysis of citations of science information on Misplaced Pages or of scientific citations on the site, e.g. enabling listing the most relevant or most-cited scientific journals and categories and dominant domains. Since 2015, the altmetrics platform Altmetric.com also shows citing English Misplaced Pages articles for a given study, later adding other language editions. The Wikimedia platform under development Scholia also shows "Misplaced Pages mentions" of scientific works. A study suggests
1128-411: The citation-system used (e.g., Oxford , Harvard , MLA , NLM , American Sociological Association (ASA), American Psychological Association (APA), etc.). Each system is associated with different academic disciplines , and academic journals associated with these disciplines maintain the relevant citational style by recommending and adhering to the relevant style guides . A bibliographic citation
1175-465: The context of a single citation system. These may be referred to as citation formats as well as citation styles. The various guides thus specify order of appearance, for example, of publication date, title, and page numbers following the author name, in addition to conventions of punctuation, use of italics, emphasis, parenthesis, quotation marks, etc., particular to their style. A number of organizations have created styles to fit their needs; consequently,
1222-824: The current claim. The digitization of patent data and increasing computing power have led to a community of practice that uses these citation data to measure innovation attributes, trace knowledge flows, and map innovation networks. Modern scientists are sometimes judged by the number of times their work is cited by others—this is actually a key indicator of the relative importance of a work in science. Accordingly, individual scientists are motivated to have their own work cited early and often and as widely as possible, but all other scientists are motivated to eliminate unnecessary citations so as not to devalue this means of judgment . A formal citation index tracks which referred and reviewed papers have referred which other such papers. Baruch Lev and other advocates of accounting reform consider
1269-694: The discretion of the developer, and are often not implemented. The term tooltip originally came from older Microsoft applications (e.g. Microsoft Word 95 ). These applications would have toolbars wherein, when moving the mouse over the Toolbar icons, displayed a short description of the function of the tool in the toolbar. More recently, these tooltips are used in various parts of an interface, not only on toolbars. CSS , HTML , and JavaScript also other coding systems allow web designers to create customized tooltips. Demonstrations of tooltip usage are prevalent on web pages. Many graphical web browsers display
1316-453: The documents. A typical aim would be to identify the most important documents in a collection. A classic example is that of the citations between academic articles and books. For another example, judges of law support their judgements by referring back to judgements made in earlier cases (see citation analysis in a legal context ). An additional example is provided by patents which contain prior art , citation of earlier patents relevant to
1363-413: The field of communication, Michael Bugeja and Daniela V. Dimitrova have found that citations to online sources have a rate of decay (as cited pages are taken down), which they call a "half-life", that renders footnotes in those journals less useful for scholarship over time. Other experts have found that published replications do not have as many citations as original publications. Another important issue
1410-478: The formatting of citations and bibliographies. In some areas of the humanities, footnotes are used exclusively for references, and their use for conventional footnotes (explanations or examples) is avoided. In these areas, the term footnote is actually used as a synonym for reference , and care must be taken by editors and typesetters to ensure that they understand how the term is being used by their authors. In their research on footnotes in scholarly journals in
1457-457: The impact; while in sociology the number of references, the article length, and title length are among the factors. Studies of methodological quality and reliability have found that "reliability of published research works in several fields may be decreasing with increasing journal rank". Nature Index recognizes that citations remain a controversial and yet important metric for academics. They report five ways to increase citation counts: (1) watch
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1504-433: The main text to be placed following the punctuation in the phrase or clause the note is about. The exception to this rule occurs when a sentence contains a dash, in which case the superscript would precede it. However, MLA is not known for endnote or footnote citations, and APA and Chicago styles use them more regularly. Historians are known to use Chicago style citations. Aside from their technical use, authors use notes for
1551-404: The normal form of citation in historical journals. This is due, firstly, to the fact that the most important references are often to archive sources or interviews that do not readily fit standard formats, and secondly, to the fact that historians expect to see the exact nature of the evidence that is being used at each stage. The MLA (Modern Language Association) requires the superscript numbers in
1598-576: The number of times a patent is cited to be a significant metric of its quality, and thus of innovation . Reviews often replace citations to primary studies. Two metascientists reported that in a growing scientific field , citations disproportionately cite already well-cited papers, possibly slowing and inhibiting canonical progress to some degree in some cases. They find that "structures fostering disruptive scholarship and focusing attention on novel ideas" could be important. Recommendation systems sometimes also use citations to find similar studies to
1645-422: The one the user is currently reading or that the user may be interested in and may find useful. Better availability of integrable open citation information could be useful in addressing the "overwhelming amount of scientific literature". Knowledge agents may use citations to find studies that are relevant to the user's query, in particular citation statements are used by scite.ai to answer a question, also providing
1692-475: The original source. Experts have found that simple precautions, such as consulting the author of a cited source about proper citations, reduce the likelihood of citation errors and thus increase the quality of research. Another study noted that approximately 25% citations do not support the claims made, a finding that affects many disciplines, including history. Research suggests the impact of an article can be, partly, explained by superficial factors and not only by
1739-435: The same subject. There is research about citations and development of related tools and systems, mainly relating to scientific citations. Citation analysis is a method widely used in metascience . Citation analysis is the examination of the frequency, patterns, and graphs of citations in documents. It uses the directed graph of citations — links from one document to another document — to reveal properties of
1786-408: The scientific merits of an article. Field-dependent factors are usually listed as an issue to be tackled not only when comparisons across disciplines are made, but also when different fields of research of one discipline are being compared. For example, in medicine, among other factors, the number of authors, the number of references, the article length, and the presence of a colon in the title influence
1833-602: The superscripted text to "ref1". The London printer Richard Jugge is generally credited as the inventor of the footnote, first used in the Bishops' Bible of 1568. Early printings of the Douay Bible used a four-dot punctuation mark (represented in Unicode as U+2E2C “⸬”) to indicate a marginal note. It can often be mistaken for two closely-spaced colons . At times, notes have been used for their comical effect, or as
1880-418: The text (which is permitted in American legal citation). Richard A. Posner has also written against the use of notes in judicial opinions. Bryan A. Garner , however, advocates using notes instead of inline citations. HTML , the predominant markup language for web pages, has no mechanism for adding notes. Despite a number of different proposals over the years, the working group has been unable to reach
1927-499: The text of a paper using a notes system without a full bibliography could look like: The note, located either at the foot of the page (footnote) or at the end of the paper (endnote) would look like this: In a paper with a full bibliography, the shortened note might look like: The bibliography entry, which is required with a shortened note, would look like this: In the humanities, many authors also use footnotes or endnotes to supply anecdotal information. In this way, what looks like
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1974-535: The text, either bracketed or superscript or both. The numbers refer to either footnotes (notes at the end of the page) or endnotes (notes on a page at the end of the paper) that provide source detail. The notes system may or may not require a full bibliography, depending on whether the writer has used a full-note form or a shortened-note form. The organizational logic of the bibliography is that sources are listed in their order of appearance in-text, rather than alphabetically by author last name. For example, an excerpt from
2021-550: The textual inclusion does not alter the design of the publication. However, graphic designers of contemporary editions of the Bible often place the notes in a narrow column in the page centre, between two columns of biblical text. In English-language typesetting , footnotes and endnotes are usually indicated with a superscript number appended to the pertinent block of text. Typographic symbols are sometimes used instead of numbers, with their traditional ordering being: Additional typographic characters used to identify notes include
2068-424: The title length and punctuation; (2) release the results early as preprints; (3) avoid referring to a country in the title, abstract, or keywords; (4) link the article to supporting data in a repository; and (5) avoid hyphens in the titles of research articles. Citation patterns are also known to be affected by unethical behavior of both the authors and journal staff. Such behavior is called impact factor boosting and
2115-417: The tooltip is displayed continuously as long as the user hovers over the element or the text box provided by the tool. It is sometimes possible for the mouse to hover within the text box provided to activate a nested tooltip, and this can continue to any depth, often with multiple text boxes overlapped. On desktop, it is used in conjunction with a cursor , usually a pointer , whereby the tooltip appears when
2162-583: The type of source and may include: Along with information such as authors, date of publication, title and page numbers, citations may also include unique identifiers depending on the type of work being referred to. Broadly speaking, there are two types of citation systems, the Vancouver system and parenthetical referencing. However, the Council of Science Editors (CSE) adds a third, the citation-name system . The Vancouver system uses sequential numbers in
2209-538: Was reported to involve even the top-tier journals. Specifically the high-ranking journals of medical science, including The Lancet , JAMA and The New England Journal of Medicine , are thought to be associated with such behavior, with up to 30% of citations to these journals being generated by commissioned opinion articles. On the other hand, the phenomenon of citation cartels is rising. Citation cartels are defined as groups of authors that cite each other disproportionately more than they do other groups of authors who work on
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