APA (7th ed.) Citation

Buzan & Little. (2000). International systems in world history: Remaking the study of international relations. Oxford university Press.

Chicago Style (17th ed.) Citation

Buzan and Little. International Systems in World History: Remaking the Study of International Relations. Oxford: Oxford university Press, 2000.

MLA (8th ed.) Citation

Buzan and Little. International Systems in World History: Remaking the Study of International Relations. Oxford university Press, 2000.