Cita APA (7a ed.)

Ullmann, W. (1976). The legal validity of the papal electoral pacts. The papacy and political ideas in the middle ages, 3-35.

Cita Chicago Style (17a ed.)

Ullmann, Walter. "The Legal Validity of the Papal Electoral Pacts." The Papacy and Political Ideas in the Middle Ages 1976: 3-35.

Cita MLA (8a ed.)

Ullmann, Walter. "The Legal Validity of the Papal Electoral Pacts." The Papacy and Political Ideas in the Middle Ages, 1976, pp. 3-35.

Precaución: Estas citas no son 100% exactas.