Morris, C. (1991). The papal monarchy: The Western Church from 1050 to 1250 (First issued as a Clarendon paperback.). Clarendon Press.
Chicago-Zitierstil (17. Ausg.)Morris, Colin. The Papal Monarchy: The Western Church from 1050 to 1250. First issued as a Clarendon paperback. Oxford u.a: Clarendon Press, 1991.
MLA-Zitierstil (9. Ausg.)Morris, Colin. The Papal Monarchy: The Western Church from 1050 to 1250. First issued as a Clarendon paperback. Clarendon Press, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.