APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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