\begin{thebibliography}{widest-label}
\bibitem[label]{cite_key}
.
.
.
\end{thebibliography}
The thebibliography environment produces a bibliography or reference list. In the article style, this reference list is labeled "References"; in the report style, it is labeled "Bibliography".
widest-label Text that, when printed, is approximately as wide as the widest item label produces by the \bibitem commands.
See also: Environments,