APA (7th ed.) Citation

Godfrey, J. (1980). 1204, the unholy Crusade / John Godfrey. Oxford University Press.

Chicago Style (17th ed.) Citation

Godfrey, John. 1204, the Unholy Crusade / John Godfrey. Oxford: Oxford University Press, 1980.

MLA (9th ed.) Citation

Godfrey, John. 1204, the Unholy Crusade / John Godfrey. Oxford University Press, 1980.

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