MLA

Victorinus, Marius. Commentarius in Ciceronis De Inventione. 0AD. https://collections.library.yale.edu/catalog/2057499.

APA, 6th edition

Victorinus, M. (0 C.E.). Commentarius in Ciceronis De inventione [Manuscripts, Medieval France 12th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/2057499.