Parenthetical Citation

A parenthetical citation is a brief source reference inserted in parentheses at the point of quotation or paraphrase, keyed to a fuller entry in the bibliography or references list. In MLA style it looks like '(Grafton 27)'; in APA style it looks like '(Grafton, 1997, p. 27)'; in author–date Chicago it looks like '(Grafton 1997, 27)'.

The system was popularised in the twentieth century by the social sciences, which wanted a citation form that kept the eye in the main text rather than pulling it to the foot of the page. Since the reference is minimal — usually just author and page, or author and date — the reader can trace it later without breaking the flow now.

Parenthetical citation is not, strictly, an alternative to footnotes in every context. Legal writing (Bluebook), humanities scholarship of the older school, and any argument whose citations carry substantive comment still prefer footnotes, because a footnote can hold a sentence and a parenthesis cannot. Parenthetical citation shines when the citations are pure attribution, one after another.

Common mistakes: forgetting that every parenthetical cite must correspond to a full entry in the bibliography (a parenthetical without a matching entry is not a citation, it is a hint); over-citing to the point that a sentence becomes a fence of parentheses; and citing the same source repeatedly in the same paragraph when a single citation at the end would do.