APA (7th ed.) Citation

O'Sullivan, P. M. (1986). Geopolitics. St. Martin's Press.

Chicago Style (17th ed.) Citation

O'Sullivan, Patrick Michael. Geopolitics. New York: St. Martin's Press, 1986.

MLA (9th ed.) Citation

O'Sullivan, Patrick Michael. Geopolitics. St. Martin's Press, 1986.