MLA

Justinus, Marcus Junianus. Epitoma Historiarum Pompei Trogi, Etc. 0AD. https://collections.library.yale.edu/catalog/2013556.

APA, 6th edition

Justinus, M. J. (0 C.E.). Epitoma historiarum Pompei Trogi, etc [Manuscripts, Medieval Italy 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/2013556.