%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{15}

\bibitem{Roberts_etal2011} Roberts, J., Floyd, S., \& Thompson, S. (2011). The clinical nurse specialist in New Zealand : how is the role defined? \textit{Nursing Praxis in New Zealand}, \textit{27}(2), 24--35.

\end{thebibliography}

\end{document}

