APA (7th ed.) Citation

Falls, C. (1961). A hundred years of war (2nd ed.). Duckworth.

Chicago Style (17th ed.) Citation

Falls, Cyril. A Hundred Years of War. 2nd ed. London: Duckworth, 1961.

MLA (9th ed.) Citation

Falls, Cyril. A Hundred Years of War. 2nd ed. Duckworth, 1961.

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