Cita APA (7a ed.)

Buzan, B. (2004). The United States and the great powers: World politics in the twenty-first century. Polity.

Cita Chicago Style (17a ed.)

Buzan, Barry. The United States and the Great Powers: World Politics in the Twenty-first Century. Cambridge [etc.]: Polity, 2004.

Cita MLA (9a ed.)

Buzan, Barry. The United States and the Great Powers: World Politics in the Twenty-first Century. Polity, 2004.