Harvard

To be made up of:

• Author.
• Year of publication (in round brackets).
• Title of book (in italics).
• Place of publication: publisher.
• Page number or figure number for graph.
• Graph.

In-text citation:

(Gray, 2009, p.87)

Reference list:

Gray, A. (2009). How to reference scientific papers. Oxford: Oxford University Press. p.87. Graph.