%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{10}

\bibitem{Eckmann_etal1988} Eckmann, R., Gaedke, U., \& Wetzlar, H. J. (1988). \textit{Effects of Climatic and Density-Dependent Factors on Year-Class Strength of Coregonus lavaretus in Lake Constance} (Vol. 45).

\end{thebibliography}

\end{document}

