Cita APA

Ullmann, W. (1974). A Short history of the Papacy in the Middle Ages. London: Methuen.

Citación estilo Chicago

Ullmann, Walter. A Short History of the Papacy in the Middle Ages. London: Methuen, 1974.

Cita MLA

Ullmann, Walter. A Short History of the Papacy in the Middle Ages. London: Methuen, 1974.

Precaución: Estas citas no son 100% exactas.