Ullmann, W. (1974). A short history of the papacy in the Middle Ages (Repr. with corr.). Methuen.
Citazione stile Chigago Style (17a edizione)Ullmann, Walter. A Short History of the Papacy in the Middle Ages. Repr. with corr. London: Methuen, 1974.
Citatione MLA (9a ed.)Ullmann, Walter. A Short History of the Papacy in the Middle Ages. Repr. with corr. Methuen, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.
