APA (7th ed.) Citation

(1950). A short history of international affairs 1920-1939. London etc..

Chicago Style (17th ed.) Citation

A Short History of International Affairs 1920-1939. London etc., 1950.

MLA (8th ed.) Citation

A Short History of International Affairs 1920-1939. London etc., 1950.

Warning: These citations may not always be 100% accurate.