%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{10}

\bibitem{Akamine+Matsumiya1992} Akamine, T., \& Matsumiya, Y. (1992). \textit{Mathematical analysis of age-length key method for estimating age composition from length composition}.

\end{thebibliography}

\end{document}

