APA (7th ed.) Citation
Gregorius Magnus PP. I,, & Minard, P. (1991). Registre des lettres. Les Éditions du Cerf.
Chicago Style (17th ed.) Citation
Gregorius Magnus PP. I,, and Pierre Minard. Registre Des Lettres. Paris: Les Éditions du Cerf, 1991.
MLA (9th ed.) Citation
Gregorius Magnus PP. I,, and Pierre Minard. Registre Des Lettres. Les Éditions du Cerf, 1991.
Warning: These citations may not always be 100% accurate.