MLA

Virgil. Aeneid. 0AD. https://collections.library.yale.edu/catalog/10622005.

APA, 6th edition

V. (0 C.E.). Aeneid [Manuscripts, Medieval Italy 15th century, Medieval and Renaissance Manuscript Fragments in Beinecke Library, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10622005.