APA (7th ed.) Citation

Gathorne-Hardy. (1950). A short history of international affairs, 1920-1939 (4th ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Gathorne-Hardy. A Short History of International Affairs, 1920-1939. 4th ed. London New York: Oxford University Press, 1950.

MLA (8th ed.) Citation

Gathorne-Hardy. A Short History of International Affairs, 1920-1939. 4th ed. Oxford University Press, 1950.