APA (7th ed.) Citation

Keegan, J. (1994). A history of warfare (Pimlico edition.). Pimlico.

Chicago Style (17th ed.) Citation

Keegan, John. A History of Warfare. Pimlico edition. London: Pimlico, 1994.

MLA (9th ed.) Citation

Keegan, John. A History of Warfare. Pimlico edition. Pimlico, 1994.