APA (7th ed.) Citation

Riley-Smith, J. S. C. (1997). The first crusade and the idea of crusading (3. paperback print.). Univ. of Pennsylvania Press.

Chicago Style (17th ed.) Citation

Riley-Smith, Jonathan Simon Christopher. The First Crusade and the Idea of Crusading. 3. paperback print. Philadelphia, Pa: Univ. of Pennsylvania Press, 1997.

MLA (9th ed.) Citation

Riley-Smith, Jonathan Simon Christopher. The First Crusade and the Idea of Crusading. 3. paperback print. Univ. of Pennsylvania Press, 1997.