MLA

Aristotle. De Caelo; Porphyry, Isagoge; Etc. 0AD. https://collections.library.yale.edu/catalog/31907127.

APA, 6th edition

A. (0 C.E.). De caelo; Porphyry, Isagoge; etc [Manuscripts, Medieval Byzantine Empire 14th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/31907127.