MLA

Consuetudines Cistercienses. 1314. https://collections.library.yale.edu/catalog/10622035.

APA, 6th edition

Consuetudines Cistercienses. (1314). [Manuscripts, Medieval France 14th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10622035.