%%
%% The LaTeX Companion, 2ed (second printing August 2004)
%%
%% Example 12-2-3 on page 692.
%%
%% Copyright (C) 2004 Frank Mittelbach, Michel Goossens,
%%    Johannes Braams, David Carlisle, and Chris Rowley
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See http://www.latex-project.org/lppl.txt for details.
%%

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{255.0pt}

% small headings for the example
\makeatletter
\renewcommand\section{\@startsection{section}{1}{\z@}%
                                    {1.25ex \@plus1ex \@minus.2ex}%
                                    {.8ex}%
                                    {\normalsize\bfseries}}
\makeatother

\StartShownPreambleCommands
\bibliographystyle{abbrv}
\makeatletter
\renewcommand\@biblabel[1]{#1.}
\makeatother
\StopShownPreambleCommands
\begin{document}
\nocite{Knuth-CT-a,Knuth:TB10-1-31}
\bibliography{tex}
\end{document}