MLA

Unidentified Philosophical Commentary (Fragment). 0AD. https://collections.library.yale.edu/catalog/10543761.

APA, 6th edition

Unidentified philosophical commentary (fragment). (0 C.E.). [Manuscripts, Medieval England 14th century, Medieval and Renaissance Manuscript Fragment in Beinecke Library, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10543761.