Cita APA (7th ed.)

Cyprian, S., & Donna, R. B. (1964). Letters (1-81). Catholic University of America Press, Inc..

Cita Chicago (17th ed.)

Cyprian, Saint, i Rose Bernard Donna. Letters (1-81). Washington, D.C.: Catholic University of America Press, Inc., 1964.

Cita MLA (9th ed.)

Cyprian, Saint, i Rose Bernard Donna. Letters (1-81). Catholic University of America Press, Inc., 1964.