APA (7th ed.) Citation

Buzan,B. (2000). International systems in world history. OUP.

Chicago Style (17th ed.) Citation

Buzan,B. International Systems in World History. New York: OUP, 2000.

MLA (9th ed.) Citation

Buzan,B. International Systems in World History. OUP, 2000.

Warning: These citations may not always be 100% accurate.