APA (7th ed.) Citation

Ferrell, R. H. (1988). American diplomacy: The 20th century. Norton.

Chicago Style (17th ed.) Citation

Ferrell, Robert H. American Diplomacy: The 20th Century. New York u.a: Norton, 1988.

MLA (9th ed.) Citation

Ferrell, Robert H. American Diplomacy: The 20th Century. Norton, 1988.