Ullmann, W. (1976). De Bartoli sententia: Concilium repraesentat mentem populi. The papacy and political ideas in the middle ages, 705-733.
芝加哥风格引文Ullmann, Walter. "De Bartoli Sententia: Concilium Repraesentat Mentem Populi." The Papacy and Political Ideas in the Middle Ages 1976: 705-733.
MLA引文Ullmann, Walter. "De Bartoli Sententia: Concilium Repraesentat Mentem Populi." The Papacy and Political Ideas in the Middle Ages, 1976, pp. 705-733.
警告：这些引文格式不一定是100％准确.