APA (7th ed.) Citation

Martin, M. (1972). Three Popes and the Cardinal. Popular Libray.

Chicago Style (17th ed.) Citation

Martin, Malachi. Three Popes and the Cardinal. New York: Popular Libray, 1972.

MLA (9th ed.) Citation

Martin, Malachi. Three Popes and the Cardinal. Popular Libray, 1972.

Warning: These citations may not always be 100% accurate.