APA-Zitierstil (7. Ausg.)

Shannon, A. C. (1949). The Popes and heresy in the thirteenth century. Augustinian Press.

Chicago-Zitierstil (17. Ausg.)

Shannon, Albert Clement. The Popes and Heresy in the Thirteenth Century. Villanova, Penns: Augustinian Press, 1949.

MLA-Zitierstil (9. Ausg.)

Shannon, Albert Clement. The Popes and Heresy in the Thirteenth Century. Augustinian Press, 1949.