Cita APA (7a ed.)

Ullmann, W. (1974). A short history of the papacy in the Middle Ages (1st published, repr. with corrections.). Methuen.

Cita Chicago Style (17a ed.)

Ullmann, Walter. A Short History of the Papacy in the Middle Ages. 1st published, repr. with corrections. London: Methuen, 1974.

Cita MLA (9a ed.)

Ullmann, Walter. A Short History of the Papacy in the Middle Ages. 1st published, repr. with corrections. Methuen, 1974.

Precaución: Estas citas no son 100% exactas.