MLA

Gospel of John. 0AD. https://collections.library.yale.edu/catalog/9998913.

APA, 6th edition

Gospel of John. (0 C.E.). [Manuscripts, Medieval France 12th century, Manuscripts, Medieval Italy 13th century, Medieval and Renaissance Manuscript Fragments in Beinecke Library, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/9998913.