Cita APA (7a ed.)

Agustín, S., & Eno, R. B. (1989). Letters: 6, (1*-29*). Catholic University of America Press.

Cita Chicago Style (17a ed.)

Agustín, Santo, y Robert B. Eno. Letters: 6, (1*-29*). Washington: Catholic University of America Press, 1989.

Cita MLA (9a ed.)

Agustín, Santo, y Robert B. Eno. Letters: 6, (1*-29*). Catholic University of America Press, 1989.