%%
%% The LaTeX Companion, 2ed (second printing August 2004)
%%
%% Example A-1-8 on page 849.
%%
%% 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{207.0pt}
\StartShownPreambleCommands
\newcounter{Citctr} \newsavebox{\Citname}
\newenvironment{Citation}[1]
   {\sbox\Citname{\emph{#1}}%
    \stepcounter{Citctr}\begin{description}
      \item[Citation \arabic{Citctr}]}
   {\hspace*{\fill}\nolinebreak[1]%
    \quad\hspace*{\fill}%
%% \finalhyphendemerits=0 %% see text below
    \usebox{\Citname}\end{description}}
\StopShownPreambleCommands
\begin{document}
\begin{Citation}{Protagoras} Man is the
 measure of all things.     \end{Citation}
This is some regular text in between two
Citation environments.
\begin{Citation}{Blaise Pascal}
 On mourra seul.            \end{Citation}
More regular text \ldots
\begin{Citation}{William Pitt} Necessity
 is the plea for every infringement of
 human freedom.             \end{Citation}
\end{document}