APA (7th ed.) Citation

Gravett, C. (1990). Medieval siege warfare. Osprey.

Chicago Style (17th ed.) Citation

Gravett, Christopher. Medieval Siege Warfare. London: Osprey, 1990.

MLA (9th ed.) Citation

Gravett, Christopher. Medieval Siege Warfare. Osprey, 1990.

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