Citation

[Zipporah Schumaker]

A quotation from or reference to a book, paper, or author, especially in a scholarly work.

[Dorothey Allen]

An official summons or notice given to a person to appear.

[Greta]

a short note recognizing a source of information or of a quoted passage

[Tanya Shivari]

a passage or expression that is quoted or cited

[Malcolmdof]

a summons that commands the appearance of a party at a proceeding

[Justin Bieber]

thoroughbred that won the triple crown in 1948

[sastergri]

The act of citing a passage from a book, or from another person, in his own words.

[Kai]

The passage or words quoted; quotation.

[Hina Muqadas]

Enumeration; mention; as, a citation of facts.

[sky]

Broadly, a citation is a reference to a published or unpublished source.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. Generally the combination of both the in-body citation and the bibliographic entry constitutes what is commonly thought of as a citation. References to single, machine-readable assertions in electronic scientific articles are known as nanopublications, a form of microattribution.
Citation has several important purposes: to uphold intellectual honesty, to attribute prior or unoriginal work and ideas to the correct sources, to allow the reader to determine independently whether the referenced material supports the authors argument in the claimed way, and to help the reader gauge the strength and validity of the material the author has used.
The forms of citations generally subscribe to one of the generally accepted citations systems, such as the Oxford, Harvard, MLA, American Sociological Association, American Psychological Association, and other citations systems, as their syntactic conventions are widely known and easily interpreted by readers. Each of these citation systems has its respective advantages and disadvantages relative to the trade-offs of being informative and thus are chosen relative to the needs of the type of publication being crafted. Editors will often specify the citation system to use.