MLA

Cicero, Moral Extracts, Canon Law. 0AD. https://collections.library.yale.edu/catalog/10622017.

APA, 6th edition

Cicero, Moral extracts, Canon law. (0 C.E.). [Manuscripts, Medieval Germany 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10622017.