APA (7th ed.) Citation

Urban, W. L. (1980). The Prussian Crusade. University Press of America.

Chicago Style (17th ed.) Citation

Urban, William L. The Prussian Crusade. Lanham, MD: University Press of America, 1980.

MLA (9th ed.) Citation

Urban, William L. The Prussian Crusade. University Press of America, 1980.