APA (7th ed.) Citation

Cassian, J., & Ramsey, B. (1997). John Cassian: The conferences. Paulist Press.

Chicago Style (17th ed.) Citation

Cassian, John, and Boniface Ramsey. John Cassian: The Conferences. New York: Paulist Press, 1997.

MLA (9th ed.) Citation

Cassian, John, and Boniface Ramsey. John Cassian: The Conferences. Paulist Press, 1997.