Cita APA (7th ed.)
Augustine, S., & Eno, R. B. (1989). Letters. Catholic University of America Press.
Cita Chicago (17th ed.)
Augustine, Saint, i Robert B. Eno. Letters. Washington: Catholic University of America Press, 1989.
Cita MLA (9th ed.)
Augustine, Saint, i Robert B. Eno. Letters. Catholic University of America Press, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.