APA (7th ed.) Citation

Humble, R. (1989). Warfare in the Middle Ages. Mallard Press.

Chicago Style (17th ed.) Citation

Humble, Richard. Warfare in the Middle Ages. [United States]: Mallard Press, 1989.

MLA (9th ed.) Citation

Humble, Richard. Warfare in the Middle Ages. Mallard Press, 1989.

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