APA (7th ed.) Citation

Hudson, G. F. (1939). The Far East in world politics: A study in recent history (2nd ed.). O.U.P..

Chicago Style (17th ed.) Citation

Hudson, G. F. The Far East in World Politics: A Study in Recent History. 2nd ed. London: O.U.P., 1939.

MLA (8th ed.) Citation

Hudson, G. F. The Far East in World Politics: A Study in Recent History. 2nd ed. O.U.P., 1939.