thebib-plus.sty -   This is for people who are using thebibliography or
                    \bibliography as defined in the standard LaTeX styles,
                    but who want the extra features described below.

With this style-option:
- the default title is "References", but can be changed by putting a
  \renewcommand{\bibtitle}{...} command before \begin{thebibliography}
- if the document style is such that \pagestyle{headings} is used,
  "REFERENCES" goes in the page-heading by default, but can be changed
  with \renewcommand{\bibheadtitle}{...}
- thebibliography gives an \addcontentsline command, so that \tableofcontents 
  puts the bibliography (with appropriate title) in the table of contents.

The files are:
apalike-plus.sty -  This is for people who want something like apalike.sty
                    (perhaps because they are using apalike.bst), but who
                    want the extra features described above.
authordate1-4.sty - This is for people who are using one of the BibTeX
                    author-date style files authordate1.bst, ... ,
                    authordate4.bst.  It redefines \cite and thebibliography,
                    and also defines a \shortcite command such that if \cite 
                    gives "(Smith, 1970)", \shortcite gives "(1970)".