Authordate produces styles loosely based on the recommendations of British Standard 1629(1976), Butcher's Copy-editing and the Chicago Manual of Style.

The bundle provides four BibTeX styles (authordate1, …, authordate4), and a LaTeX package, for citation in author/date style. The BibTeX styles differ in how they format names and titles; one of them is necessary for the LaTeX package to work.

See also natbib.

The author is David Rhead.