MLA

Vincent, of Beauvais, -1264. Speculum historiale. Box. [ca. 1450]. https://collections.library.yale.edu/catalog/2005356.

APA, 6th edition

Vincent, of Beauvais, -1264. (["Box"])([ca. 1450])[Speculum historiale]. https://collections.library.yale.edu/catalog/2005356.