Citations

There are two primary forms of citation in the harvard style dependent upon whether the reference is used as a noun or parenthetically. Additionally, where there are more than two authors, all authors are listed in the first citation and in subsequent citations just the first author's name followed by `et al.' is used. The following example from () illustrates these points.
The major improvement concerns the structure of the interview (Ulrich & Trumbo 1965, p. 112) .... Later reports (Carlson, Thayer, Mayfield & Peterson 1971) record greatly increased interviewer reliability for structured interviews. Wright (1969, p. 408) comments that `undoubtedly interviewer skill is directly related to the validity, quantity and quality of the interview output', and this would suggest some sort of interviewer training is called for. Rowe (1960), for example, found that trained interviewers are better able to evaluate applicants with some measure of reliability. In addition Wexley, Sanders & Yukl (1973) showed that by extensive interviewer training all significant contrast effects could be eliminated. The results of the 1971 study (Carlson et al. 1971) are still relevant, but efforts to ....

To facilitate using a citation as a noun a new command \citeasnoun has been created which has the same syntax as the \cite command except that multiple citations are not permitted. The effect of this command is that

As \citeasnoun{btxdoc} and \citeasnoun[Annex~B]{latex} describe \ldots
produces
As () and (, Annex B) describe ...
whereas
The \BibTeX\ \cite{btxdoc} and \LaTeX\ \cite[Annex~B]{latex} manuals \ldots
produces
The BIEM BTEX (; ) and LATEX (; , Annex B) manuals ...
A second new command \possessivecite is provided for those instances where it is desired to use the citation as a possessive noun phrase. This is a variation on the \citeasnoun command and multiple citations are not permitted. As an example of its use
\possessivecite{latex} description of this feature is \ldots
produces
's () description of this feature is ...
A third new command \citeaffixed allows text to be affixed inside the beginning of the parenthesis of a parenthetical citation. This command is like the the \cite command except that it takes a second argument – the text to be affixed after the opening parenthesis. For example
\BibTeX\ manuals \citeaffixed{latex,btxdoc}{e.g.} describe \ldots
produces
BIEM BTEX manuals (e.g. ; ,) describe ...

By default, where appropriate, citations are abbreviated automatically after the first reference when bibliographies are produced by BIEM BTEX. Provision is also made for this feature to be accessed during manual coding. This feature may be overridden by using the \citationmode command which takes full, abbr or default as its single argument. The command \citationmode{full} makes the system use full citations, \citationmode{abbr} makes the system use abbreviated citations and \citationmode{default} causes the default behaviour of using full citations for the first instance and abbreviated citations thereafter.

In addition to these primary forms of citation, the citation commands \citeyear and \citename are provided. \citeyear behaves like the \cite command except that only the year portion of the citation label is used. For example,

\citeyear{btxdoc,latex}
produces (,). \citename behaves like the \citeasnoun command except that only the author name(s) (unabbreviated) portion of the citation label is used. For example,
\citename{btxdoc}
produces
.
The use of this command does not trigger the use of abbreviated citations for subsequent \citeasnoun and \cite references.