# How can I cite a reference in french ("et" instead of "and" between author names)?

I'm currently writing my thesis, and I'm need to cite a reference using "et" instead of "and" between author names, for example:

Copin-montégut et Avril (1995)

• Try one of the bst files listed at ctan.org/tex-archive/biblio/bibtex/contrib/bib-fr] Dec 3, 2015 at 15:14
• Dec 3, 2015 at 15:15
• thank you for your comments, i have tried to use this package, but I am getting this error: ! Package babel Error: You haven't defined the language en yet.See the babel package documentation for explanation.Type H <return> for immediate help.... \select@language{en} Dec 4, 2015 at 7:54

\documentclass[a4paper,12pt]{article}
\usepackage[frenchb]{babel}
\usepackage{natbib}
\begin{filecontents}{mybib.bib}
@BOOK{foo,
AUTHOR =       {J. Doe and F. Foo},