APA (7th ed.) Citation

Oman, C. (1959). A history of the art of war in the Middle Ages (2nd ed.). Franklin.

Chicago Style (17th ed.) Citation

Oman, Charles. A History of the Art of War in the Middle Ages. 2nd ed. N.Y.: Franklin, 1959.

MLA (8th ed.) Citation

Oman, Charles. A History of the Art of War in the Middle Ages. 2nd ed. Franklin, 1959.