MLA

De Cognitione Habita apud Demones. 0AD. https://collections.library.yale.edu/catalog/10516750.

APA, 6th edition

De cognitione habita apud demones. (0 C.E.). [Manuscripts, Medieval Italy 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10516750.