%&LaTeX
\documentclass{article}

\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\begin{document}

\begin{thebibliography}{1}

\bibitem{Simmons_etal2002} Simmons, J., Ziemkiewicz, P., \& Black, D. C. (2002). Use of Steel Slag Leach Beds for the Treatment of Acid Mine Drainage. \textit{Mine Water Env.}, \textit{21}(2), 91--99.

\end{thebibliography}

\end{document}

