Powell, J. M. (2003). Innocent III and Alexius III: A crusade plan that failed. The experience of crusading ; Vol. 1: Western approaches, 96-102.
Style de citation Chicago (17e éd.)Powell, James M. "Innocent III and Alexius III: A Crusade Plan That Failed." The Experience of Crusading ; Vol. 1: Western Approaches 2003: 96-102.
Style de citation MLA (8e éd.)Powell, James M. "Innocent III and Alexius III: A Crusade Plan That Failed." The Experience of Crusading ; Vol. 1: Western Approaches, 2003, pp. 96-102.
Attention : ces citations peuvent ne pas être correctes à 100%.