There are four bibliography styles currently available within the
harvard family, agsm (used in this document) which is based on
##agsm (##agsm, pp. 95–98), dcu
which is based upon the conventions in use in the Design Computing Unit,
Department of Architectural and Design Science, University of Sydney,
kluwer which aspires to conform to the requirements of Kluwer Academic
Publishers and nederlands which conforms to Dutch conventions.
They are invoked by the
\bibliographystyle as described in
##latex (##latex, p. 74) and effect the layout of the entries in the bibliography.