MLA

Rothschild Canticles. 0AD. https://collections.library.yale.edu/catalog/2002755.

APA, 6th edition

Rothschild canticles. (0 C.E.). [Prayers and devotions, Manuscripts, Medieval Flanders (Belgium) 14th century, Manuscripts, Medieval Rhineland (Germany) 14th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/2002755.