Here I will explain how I use natbib and agsm from harvard package for Harvard style of references. Include natbib by using \usepackage{natbib} set citesep (separation between two citations in the same place) and aysep (separation between author and year in a citation) using \setcitestyle{citesep={;}, aysep={,}} set bibliograpgy style to agsm my using \bibliographystyle{agsm} and the cite as required using \cite{key} , or \citep{key} a complete reference can be found here Example \documentclass[a4paper,10pt]{report} \usepackage{natbib} \setcitestyle{citesep={;}, aysep={,}} \begin{document} \chapter{Chapter 1} This is a \citep{key}. \bibliographystyle{agsm} \bibliography{library} \addcontentsline{toc}{chapter}{References} \end{document}