APA (7th ed.) Citation

Gregorius, N. 3., & Maraval, P. (1990). Lettres. Sources chrétiennes.

Chicago Style (17th ed.) Citation

Gregorius, Nyssenus 335-394, and Pierre Maraval. "Lettres." Sources Chrétiennes 1990.

MLA (8th ed.) Citation

Gregorius, Nyssenus 335-394, and Pierre Maraval. "Lettres." Sources Chrétiennes, 1990.

Warning: These citations may not always be 100% accurate.