APA (7th ed.) Citation

Pollard, A. F. (1932). Factors in modern history (3rd ed.). Constable.

Chicago Style (17th ed.) Citation

Pollard, A. F. Factors in Modern History. 3rd ed. London: Constable, 1932.

MLA (8th ed.) Citation

Pollard, A. F. Factors in Modern History. 3rd ed. Constable, 1932.

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