Ullmann, W. (1976). The legal validity of the papal electoral pacts. The papacy and political ideas in the middle ages, 3-35.
Citação norma ChicagoUllmann, Walter. "The Legal Validity of the Papal Electoral Pacts." The Papacy and Political Ideas in the Middle Ages 1976: 3-35.
Citação norma MLAUllmann, Walter. "The Legal Validity of the Papal Electoral Pacts." The Papacy and Political Ideas in the Middle Ages, 1976, pp. 3-35.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.