APA (7th ed.) Citation

Lunt, W. E. (1965). Papal revenues in the Middle Ages. Octagon Books.

Chicago Style (17th ed.) Citation

Lunt, William Edward. Papal Revenues in the Middle Ages. New York: Octagon Books, 1965.

MLA (9th ed.) Citation

Lunt, William Edward. Papal Revenues in the Middle Ages. Octagon Books, 1965.