%&LaTeX
\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\begin{document}

\begin{thebibliography}{1}

\bibitem{Frenzel1994} Frenzel, B.(H.). (1994). \textit{Evaluation of land surfaces cleared from forests in the Roman Iron Age and the time of migrating Germanic tribes based on regional pollen diagrams}. Stuttgart: Gustav Fischer Verlag.

\end{thebibliography}

\end{document}

