APA (7th ed.) Citation

Overy. (2014). A history of war in 100 battles. NY Oxford University Press.

Chicago Style (17th ed.) Citation

Overy. A History of War in 100 Battles. New York: NY Oxford University Press, 2014.

MLA (8th ed.) Citation

Overy. A History of War in 100 Battles. NY Oxford University Press, 2014.