MLA

Cicero, Marcus Tullius. Partitiones Oratoriae; Topica, Etc. 0AD. https://collections.library.yale.edu/catalog/33389310.

APA, 6th edition

Cicero, M. T. (0 C.E.). Partitiones oratoriae; Topica, etc [Manuscripts, Medieval Italy 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/33389310.