how to create numeric-style instead of authoryear-style citation call-outs?

When I write the citations, I get the name of the author and the year, like this "[Alagarasi(2011)]", but I want the citation call-out to be numeric, say, "[2]".

\documentclass[10pt,‌​twoside,openright]{re‌​port}
\usepackage[phd]{edmaths}
\usepackage{graphicx}
\usepackage{float}
\usepackage[rightcaption]{sidecap}

\bibliographystyle{apsrev}
\bibliography{reference}

\end{document}

• The > markdown is for formatting quotations, in order to format code, you should use code sample markdown. Simply highlight the code and press ctrl+k, or use the code sample button (fifth from the left, the one that looks like {}) – Au101 Aug 15 '16 at 19:40
• Welcome to TeX.SX! What document class are you using? Can you give a pointer to edmaths.sty? – egreg Aug 15 '16 at 19:40
• \bibliographystyle{plain} instead of apsrev may do what you want. – Marijn Aug 15 '16 at 19:53
• Please always post compilable code. Numerical labels are default. – cfr Aug 15 '16 at 23:26
• @Marijn - The plain bibliography style formats the bibliographic entries rather differently from the apsrev style. Presumably, the OP is using apsrev for a reason; switching to a different bibliography style mainly because of the formatting of the citation call-outs seems like questionable advice. At least, you should point out that the OP should expect major changes in the way the bibliographic entries are formatted. – Mico Aug 16 '16 at 5:34

It appears that the apsrev bibliography style was created with the makebst utility, which was written by the author of the natbib citation management package. Hence, adding the instruction
\usepackage[numbers]{natbib}