APA (7th ed.) Citation

Leo I, P., Freeland, J. P., & Conway, A. J. (1995). Sermons. Catholic University of America Press.

Chicago Style (17th ed.) Citation

Leo I, Pope, Jane Patricia Freeland, and Agnes Josephine Conway. Sermons. Washington, D.C.: Catholic University of America Press, 1995.

MLA (9th ed.) Citation

Leo I, Pope, et al. Sermons. Catholic University of America Press, 1995.