APA (7th ed.) Citation

Beer, F. A. (1974). How much war in history: Definitions, estimates, extrapolations and trends. Sage professional paper / 2.

Chicago Style (17th ed.) Citation

Beer, Francis A. "How Much War in History: Definitions, Estimates, Extrapolations and Trends." Sage Professional Paper / 2 1974.

MLA (8th ed.) Citation

Beer, Francis A. "How Much War in History: Definitions, Estimates, Extrapolations and Trends." Sage Professional Paper / 2, 1974.