APA (7th ed.) Citation

Urban, W. L. (2005). The Teutonic Knights: A military history. Greenhill.

Chicago Style (17th ed.) Citation

Urban, William L. The Teutonic Knights: A Military History. London [u.a.]: Greenhill, 2005.

MLA (9th ed.) Citation

Urban, William L. The Teutonic Knights: A Military History. Greenhill, 2005.

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