Cita APA (7a ed.)

León I, P., & Hunt, E. (1963). Letters. The Catholic University of America Press.

Cita Chicago Style (17a ed.)

León I, Papa, y Edmund Hunt. Letters. Washintong: The Catholic University of America Press, 1963.

Cita MLA (9a ed.)

León I, Papa, y Edmund Hunt. Letters. The Catholic University of America Press, 1963.