MLA

Tibullus. Tibullus; Catullus. 0AD. https://collections.library.yale.edu/catalog/10172287.

APA, 6th edition

T. (0 C.E.). Tibullus; Catullus [Manuscripts, Medieval Italy 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10172287.