Cita APA (7th ed.)

Augustine, o. H., & Eno, R. B. (1989). Letters. Catholic University of America Press.

Cita Chicago (17th ed.)

Augustine, of Hippo, i Robert B. Eno. Letters. Washington: Catholic University of America Press, 1989.

Cita MLA (9th ed.)

Augustine, of Hippo, i Robert B. Eno. Letters. Catholic University of America Press, 1989.