There are a number of styles for citing.
Harvard style is one style in use.
This should appear in the text at the end of the quote or in your endnote
Bessant, J 2001
2 Authors Bessant, J. & dadpad K 2001.
3 or more authours - Bessant, J. et al K 2001.
For a Book the details required In your reference section in order are:
1. name/s of author/s, editor/s, compiler/s (surname, and initials or given name), or the institution responsible
2. year of publication
3. title of publication and subtitle if any (all titles must be underlined or italicised)
4. series title and individual volume if any
5. edition, if other than first
6. publisher
7. place of publication
8. page number(s) if applicable
Differences exist for electronic references, journal articals books magazines etc
Here is just one of the many guides (not very comprehensive)
http://www.library.uq.edu.au/training/citation/harvard.html
You should ask your lecturer/school/examiners which style they prefer. It may be usefull to get some tuition. I have lost marks before on papers because of poor citing (because I had the wrong thing italicised...Not happy)