%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Peng_etal2018} {\textquotedblleft}\textit{Model-based assessment of estrogen removal by nitrifying activated sludge}{\textquotedblright}. Peng L, Dai X, Liu Y, Sun J, Song S, Ni B-J, Chemosphere \textbf{197}, 430 (2018).   http://doi.org/10.1016/J.CHEMOSPHERE.2018.01.035

\end{thebibliography}

\end{document}

