APA (7th ed.) Citation

Peter Damian, S., & Blum, O. J. (1990). Letters. Catholic University of America Press.

Chicago Style (17th ed.) Citation

Peter Damian, Saint, and Owen J. Blum. Letters. Washington, D.C: Catholic University of America Press, 1990.

MLA (8th ed.) Citation

Peter Damian, Saint, and Owen J. Blum. Letters. Catholic University of America Press, 1990.