%%
%% The LaTeX Companion, 3ed
%%
%% Example 16-7-8 on page II-547 in "Bibliography entries with multiple authors".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{171.0pt}

%  Use biber program

  \setlength\parindent{0pt}

%StartShownPreambleCommands

\usepackage[style=authoryear]{biblatex}
\addbibresource{tlc.bib}
%StopShownPreambleCommands

\begin{document}
\textcite{zpo}   \\                  % 4 authors
\textcite{LGC97} \\ \textcite{LWC99} % 2-3 authors
\end{document}
