APA (7th ed.) Citation

Donaldson, G. (2003). American foreign policy: The twentieth century in documents. Longman.

Chicago Style (17th ed.) Citation

Donaldson, Gary. American Foreign Policy: The Twentieth Century in Documents. New York: Longman, 2003.

MLA (9th ed.) Citation

Donaldson, Gary. American Foreign Policy: The Twentieth Century in Documents. Longman, 2003.