%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{15}

\bibitem{Pirret2007} Pirret, A. M. (2007). The level of knowledge of respiratory physiology articulated by intensive care nurses to provide rationale for their clinical decision-making. \textit{Intensive \& Critical Care Nursing}, \textit{23}(3), 145--155.

\end{thebibliography}

\end{document}

