APA (7th ed.) Citation

Buzan, B. (1991). New patterns of global security in the twenty-first century. International affairs, 67(3), 431-451.

Chicago Style (17th ed.) Citation

Buzan, Barry. "New Patterns of Global Security in the Twenty-first Century." International Affairs 67, no. 3 (1991): 431-451.

MLA (8th ed.) Citation

Buzan, Barry. "New Patterns of Global Security in the Twenty-first Century." International Affairs, vol. 67, no. 3, 1991, pp. 431-451.