%%
%% The LaTeX Companion, 2ed (second printing August 2004)
%%
%% Example 12-5-48 on page 744.
%%
%% 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{231.0pt}

\makeatletter
%Fix for overword.sty reported to Frank Bennett
\AtBeginDocument{\long\def\@ifowd{%
  \ifx\@let@token\@sptoken%
    \gdef\@preoverwordspace{ }%
    \let\reserved@e\@xifowd%
  \else%
    \gdef\@preoverwordspace{}%
    \ifx\@let@token\end%
      \let\reserved@e\reserved@d%
    \else%
      \ifx\@let@token\par%
        \let\reserved@e\@xifpargobble%
      \else%
        \long\def\reserved@e##1 {\long\gdef\@overword{##1}\@@ifowd}%
      \fi%
    \fi%
  \fi%
  \reserved@e}}

%Fix for camel.sty reported to Frank Bennett
\AtBeginDocument{\def\@realcite#1#2#3{%
  \ifcat$#1$\else%
   \setkeys{cameloptions}{#1}%             %<--- missing percent
  \fi%
  \if@law@requiresubjects%
   \@law@confirmsubject%
  \fi%
  \global\@ltok@argtwo{}%
  \ifcat$#3$\else%
    {\let\@law@parse=\@law@alparseplain\@law@parse #3,,}%
  \fi%
  {\let\@law@parse=\@law@clparseplain\@law@parse #2,,}%
  }}

% small headings for the example
\renewcommand\section{\@startsection{section}{1}{\z@}%
                                    {1.25ex \@plus1ex \@minus.2ex}%
                                    {.8ex}%
                                    {\normalsize\bfseries}}
\makeatother
\setlength\textheight{11\baselineskip}

\StartShownPreambleCommands
\usepackage{camel}
\forcefootnotes
\StopShownPreambleCommands
\begin{document}
\citationstyle{law}
\citationdata{jura,tex}

\ldots text \source[t]{Knuth-CT-a}
see-also \source[f]{Knuth:TB10-1-31}
\ldots\ somewhat later \ldots
\source[f]{bschur}[24,130,216]
cited-in \source[a]{zpo}

\printbibliography[labels=false]{all}
\end{document}