Cita APA (7th ed.)

Duncan, W. R., Jancar-Webster, B., & Switky, B. (2001). World politics in the 21st century. Longman.

Cita Chicago (17th ed.)

Duncan, W. Raymond, Barbara Jancar-Webster, i Bob Switky. World Politics in the 21st Century. New York: Longman, 2001.

Cita MLA (9th ed.)

Duncan, W. Raymond, et al. World Politics in the 21st Century. Longman, 2001.