APA (7th ed.) Citation

Gregorio I, . P., & Norbeg, D. (1982). S. Gregorii Magni. Brepols.

Chicago Style (17th ed.) Citation

Gregorio I, Papa, and Dag Norbeg. S. Gregorii Magni. Turnholti: Brepols, 1982.

MLA (9th ed.) Citation

Gregorio I, Papa, and Dag Norbeg. S. Gregorii Magni. Brepols, 1982.

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