APA (7th ed.) Citation

Schulzinger, R. D. (2008). U.S. diplomacy since 1900 (6th ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Schulzinger, Robert D. U.S. Diplomacy Since 1900. 6th ed. New York: Oxford University Press, 2008.

MLA (9th ed.) Citation

Schulzinger, Robert D. U.S. Diplomacy Since 1900. 6th ed. Oxford University Press, 2008.