%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{10}

\bibitem{Cadigan+Shelton1993} Cadigan, N. G., \& Shelton, P. A. (1993). SAS programs for fitting a seal population dynamics model.37.

\end{thebibliography}

\end{document}

