A short primer of how reference with an approximation of UWE Harvard style.
Note that it doesn't quite match the quirks of when UWE Harvard uses et.al. after the first time a reference is cited within your text (i.e. this template works according to the rules of the first time a piece is cited within text, rather than the subsequent modifications).
The biblatex-chicago package implements the citation style of the Chicago Manual of Style, 16th edition. In this example, the notes option causes biblatex's autocite command to put citations in footnotes. The package can also produce inline author-year citations in the Chicago style. See the package documentation for more information.
The following examples show how to produce Harvard style references using biblatex.
See this post on TeX StackExchange for further discussion on the Harvard referencing style, and this post for more details on switching to biblatex if you're more familiar with e.g. natbib.