Ullmann, W. (1962). The growth of papal government in the middle ages: A study in the ideological relation of clerical to lay power (2. ed.). Methuen.
Chicago-Zitierstil (17. Ausg.)Ullmann, Walter. The Growth of Papal Government in the Middle Ages: A Study in the Ideological Relation of Clerical to Lay Power. 2. ed. London: Methuen, 1962.
MLA-Zitierstil (9. Ausg.)Ullmann, Walter. The Growth of Papal Government in the Middle Ages: A Study in the Ideological Relation of Clerical to Lay Power. 2. ed. Methuen, 1962.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.