%&LaTeX
\documentclass{article}

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

\begin{document}

\begin{thebibliography}{1}

\bibitem{Sleegers_etal2019} {\textquotedblleft}\textit{Cephalosporin antibiotics : electrochemical fingerprints and core structure reactions investigated by LC-MSMS}{\textquotedblright}. Sleegers N, van Nuijs ALN, van den Berg M, De Wael K, Analytical chemistry \textbf{91}, 2035 (2019).   http://doi.org/10.1021/ACS.ANALCHEM.8B04487

\end{thebibliography}

\end{document}

