Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (8e éd.)

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