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xkcd webcomic titled "Wikipedian Protester". The sign says: "[CITATION NEEDED]".[1]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 ...
Footnotes with list-defined references Shortened footnotes Citations can also be placed as external links , but these are not preferred because they are prone to link rot and usually lack the full information necessary to find the original source in cases of link rot.
Wikipedia articles require reliable, published sources that directly support the information presented in the article. Now you know how to add sources to an article, but which sources should you use?
Wikipedia:Improving referencing efforts – essay on why references are important; Wikipedia:Citation templates – a full listing of various styles for citing all sorts of materials; Wikipedia:Citing sources/Example edits for different methods – showing comparative edit mode representations for different citation methods and techniques
Manually adding references can be a slow and tricky process. Fortunately, there is a tool called " RefToolbar " built into the Wikipedia edit window, which makes it much easier. To use it, click on Cite at the top of the edit window, having already positioned your cursor after the sentence or fact you wish to reference.
Wikipedia uses various referencing systems to cite sources that support assertions in the article and to add explanatory and supplementary material. This page compares two systems that are currently used (Footnotes and Shortened footnotes) and two older systems that are deprecated and no longer used for new articles (Footnote3 and Parenthetical referencing).
A reference work is a work, such as a paper, book or periodical (or their electronic equivalents), to which one can refer for information. [1]
Five references are provided early on: two textbooks, a specialized monograph on aldol reactions, and two review articles. Most readers would assume that the bulk of the statements in the comparatively short Wikipedia article could be verified by checking any of these references, and so it may only be necessary to provide additional in-line references for controversial statements, for recent ...