\documentclass[10pt,letterpaper]{article}
%\usepackage{natbib}
\usepackage[left=2.00cm, right=2.00cm, top=2.00cm, bottom=2.00cm]{geometry}
\usepackage[authoryear]{natbib}

\begin{document}

\section{Essai}

Essai de bibliographie avec un essai de citation dans le texte.  Alors citons~\cite{BenCCM90} qui est le deuxi\`eme de la liste.
%\citet{BenCMM90} qui est le deuxi\`eme de la liste.

%\nocite{*}
%aller biblio poly /faire recherche optimization research / extraire info

%\bibliographystyle{plain}
\bibliographystyle{plainnat}
%\bibliographystyle{apalike}
\bibliography{Mybib}

\end{document}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass[10pt,letterpaper]{article}
%\usepackage{natbib}
\usepackage[left=2.00cm, right=2.00cm, top=2.00cm, bottom=2.00cm]{geometry}
%\usepackage{natbib}

	
\section{Essai}
	
Essai de bibliographie avec un essai de citation dans le texte.  Alors citons~\cite{BenCCM90} qui est le deuxi\`eme de la liste.
%\citet{BenCMM90} qui est le deuxi\`eme de la liste.
	
%\nocite{*}
%aller biblio poly /faire recherche optimization research / extraire info
	
\bibliographystyle{plain}
%\bibliographystyle{plainnat}
%\bibliographystyle{apalike}
\bibliography{chapitre14}
	

