Harvard Style citation in Latex

Here I will explain how I use natbib and agsm from harvard package for Harvard style of references.

1. Include natbib by using \usepackage{natbib}
2.  set citesep (separation between two citations in the same place) and aysep (separation between author and year in a citation) using \setcitestyle{citesep={;}, aysep={,}}
3.  set bibliograpgy style to agsm my using \bibliographystyle{agsm}
4. 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}