APA (7th ed.) Citation

John, T. (1972). The Crusades: 1099-1291. Ginn.

Chicago Style (17th ed.) Citation

John, Trevor. The Crusades: 1099-1291. London: Ginn, 1972.

MLA (9th ed.) Citation

John, Trevor. The Crusades: 1099-1291. Ginn, 1972.

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