Acknowledging, or referencing, the sources of the quotes, theories, ideas, etc. you've used in your work will help you to avoid accusations of plagiarism.

The Faculty of Philosophy does not impose any particular referencing style. Many different ways of giving references are used in academic publications. All systems are acceptable, provided they are applied consistently. Suitable common referencing styles include the Harvard system (author-date), or MHRA.

1. References may be given either in the main text of your essay, or in a footnote or endnote. References are in brackets and take the form of the author's surname, followed by date of publication, followed (if appropriate) by page number(s), e.g. (Wiggins 1997, 251). Note that all quotations must be supplied with page references, but if you are referring to an author's text in general terms, then page numbers aren't required. 
2. Full details of all the works to which you refer must be supplied in a list of references or bibliography at the end of your essay.

For further information see the Faculty's presentation guidelines (PDF)