APA (American Psychological Association) is an author-date style developed mainly for use in psychology but has been adopted by other disciplines.
Author-date refers to how the source is cited in-text. This is usually an author and the date of publication in parenthesis, for example: (A. Writer, 2000).
At the end of the main body of work, an alphabetical list cites all of the references used. This is known as the Bibliography or Reference List.
[Author.] [(year of publication).] [Title of article.] [Title of journal,] [Volume number (issue number),] [pages.] [Retrieved date of access from Name of collection URL of collection.]
Gruter, C. and Ratniels, F.L.W. (2011). Honeybee foragers increase the use of waggle dance information when private information becomes unrewarding. Animal behaviour, 81(5), 949-954. Retrieved 19th July 2011 from JSTOR www.jstor.org.
[Author.] [(Year,).] [Title of paper.] [In Editor (first initial, last name)] [(Ed.)] [Title of conference proceedings] [(page numbers).] [Place of publication: Publisher.]
Peters, L. (2006). Lloyd George, the Boer War and the North Wales press. In J. Hinks & C. Armstrong (Eds.), British Book Trade Conference: Vol. 22. The British book trade and the colonies (pp.100-120). London: EHS Press.