%&LaTeX
\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\begin{document}

\begin{thebibliography}{1}

\bibitem{Oli+Rogers1996} Oli, M. K., \& Rogers, E. M. (1996). Seasonal pattern in group size and population composition of blue sheep in Manang, Nepal. \textit{Journal of Wildlife Management}, \textit{60}(4), 797--801.

\end{thebibliography}

\end{document}

