APA (7th ed.) Citation

Gathorne-Hardy, G. M. (1950). A short history of international affairs 1920-1939 / by G.M. Gathorne-Hardy (4th ed.). O.U.P..

Chicago Style (17th ed.) Citation

Gathorne-Hardy, G. M. A Short History of International Affairs 1920-1939 / by G.M. Gathorne-Hardy. 4th ed. O.U.P., 1950.

MLA (9th ed.) Citation

Gathorne-Hardy, G. M. A Short History of International Affairs 1920-1939 / by G.M. Gathorne-Hardy. 4th ed. O.U.P., 1950.

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