APA (7th ed.) Citation

Martin, L. (1966). Diplomacy in modern European history. Macmillan.

Chicago Style (17th ed.) Citation

Martin, Laurence. Diplomacy in Modern European History. New York: Macmillan, 1966.

MLA (8th ed.) Citation

Martin, Laurence. Diplomacy in Modern European History. Macmillan, 1966.