Harvard System
In all referencing systems or styles, every reference in the text of the document gives a link or a guide to the full list of references at the end.
This can be a number, or a name. Usually with a name, there is also a date, to indicate when the item that was cited was written.
Here you can see an example of the Harvard System (from the same source as the graphic on the previous page) - on the left hand page is the body of the text, with the references. On the right is the reference section at the end of the document, to which those citations or references refer.
Image Reference:
Leeds University Library (2005) Referencing systems in use at Leeds (Online) http://www.leeds.ac.uk/library/training/referencing/ [accessed 9 September 2005, no longer available]

