Lettres / Gregorius Nyssenus.

MLA

Gregorius Nyssenus, and Pierre Maraval. Lettres / Gregorius Nyssenus. Paris: Cerf, 1990.

APA

Gregorius Nyssenus, G. Nyssenus, & Maraval, P. (1990). Lettres / Gregorius Nyssenus. Paris: Cerf.

Chicago

Gregorius Nyssenus. Lettres / Gregorius Nyssenus. Edited by Pierre Maraval. Paris: Cerf, 1990.