Cita APA (7a ed.)

Ullmann, W. (1974). A short history of the papacy in the middle ages. Methuen & co.

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

Ullmann, Walter. A Short History of the Papacy in the Middle Ages. Methuen & co, 1974.