APA (7th ed.) Citation

Knutsen. (1992). A history of international relations theory: An introduction. Manchester University Press.

Chicago Style (17th ed.) Citation

Knutsen. A History of International Relations Theory: An Introduction. New York: Manchester University Press, 1992.

MLA (8th ed.) Citation

Knutsen. A History of International Relations Theory: An Introduction. Manchester University Press, 1992.