%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Kopacz+Twardy2012} Kopacz, M., \& Twardy, S. (2012). \textit{Water and sewage management in the upper Dunajec river basin compared to the socio-structural transformations and surface water quality} (Vol. 123).

\end{thebibliography}

\end{document}

