APA (7th ed.) Citation

Regan, G. (1987). Saladin and the fall of Jerusalem. Croom Helm.

Chicago Style (17th ed.) Citation

Regan, Geoffrey. Saladin and the Fall of Jerusalem. London ; New York: Croom Helm, 1987.

MLA (9th ed.) Citation

Regan, Geoffrey. Saladin and the Fall of Jerusalem. Croom Helm, 1987.