Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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