MLA

Cistercian Statutes. 0AD. https://collections.library.yale.edu/catalog/11007475.

APA, 6th edition

Cistercian statutes. (0 C.E.). [Manuscripts, Medieval Spain 14th century, Manuscripts, Medieval Spain 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/11007475.