\cite

LaTeX2e help 1.6

#### 2.6.20.2: \cite

`\cite[text]{key_list}`

The `key_list` argument is a list of citation keys. This command generates an in-text citation to the references associated with the keys in `key_list` by entries on the ``.aux`' file read by the `\begin{document}` command.

The optional `text` argument will appear after the citation, i.e. `\cite[p. 2]{knuth}` might produce `[Knuth, p. 2]'.