MLA

Caesar, Julius. Corpus Caesarianum. 0AD. https://collections.library.yale.edu/catalog/10958723.

APA, 6th edition

Caesar, J. (0 C.E.). Corpus Caesarianum [Manuscripts, Medieval Italy 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10958723.