APA-referens (7:e uppl.)

O'SULLIVIAN, P. (1981). Geographical economics. John Wiley and Sons.

Chicago-referens (17:e uppl.)

O'SULLIVIAN, Patrick. Geographical Economics. New York: John Wiley and Sons, 1981.

MLA-referens (9:e uppl.)

O'SULLIVIAN, Patrick. Geographical Economics. John Wiley and Sons, 1981.