Cite

Opera varia, etc

MLA

Bernard, of Clairvaux, Saint, 1090 or 1091-1153. Opera varia, etc. [ca. 1300]. https://collections.library.yale.edu/catalog/11403235.

APA, 6th edition

Bernard, of Clairvaux, Saint, 1090 or 1091-1153. ([ca. 1300])[Opera varia, etc]. https://collections.library.yale.edu/catalog/11403235.