%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{10}

\bibitem{Vogel_etal1981} Vogel, J. C., Talma, A. S., \& Heaton, T. H. E. (1981). Gaseous nitrogen as evidence for denitrification in groundwater. \textit{Journal of Hydrology}, \textit{50}, 191--200.

\end{thebibliography}

\end{document}

