 \documentclass[12pt]{report}

\usepackage[nonamebreak,numbers]{natbib}
\renewcommand\bibnumfmt[1]{#1-}
\usepackage{xepersian}

\begin{document}
در مقاله
 \cite{h1}
و 
\cite{k1} و \cite{k2} 

\bibliographystyle{asa-fa}
\bibliography{refs}

\end{document}
