APA (7th ed.) Citation

Gregory I, P., & Zimmerman, O. J. (1959). Dialogues. Fathers of the Church, Inc..

Chicago Style (17th ed.) Citation

Gregory I, Pope, and Odo John Zimmerman. Dialogues. New York: Fathers of the Church, Inc., 1959.

MLA (9th ed.) Citation

Gregory I, Pope, and Odo John Zimmerman. Dialogues. Fathers of the Church, Inc., 1959.