Homiliae in evangelia (fragment).
MLA
Gregory I, Pope, approximately 540-604. Homiliae in evangelia (fragment).. approximately 800-approximately 825.. https://collections.library.yale.edu/catalog/10543813.
APA, 6th edition
Gregory I, Pope, approximately 540-604. (approximately 800-approximately 825.)[Homiliae in evangelia (fragment).]. https://collections.library.yale.edu/catalog/10543813.