%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Shorrock1990} Shorrock, G. (1990). \textit{Improved Confidence Intervals for a Normal Variance} (Vol. 18).

\end{thebibliography}

\end{document}

