MLA

Abelard, Peter, 1079-1142. Historia calamitatum and epistolae. Box. [circa 1350]. https://collections.library.yale.edu/catalog/32410871.

APA, 6th edition

Abelard, Peter, 1079-1142. (["Box"])([circa 1350])[Historia calamitatum and epistolae]. https://collections.library.yale.edu/catalog/32410871.