MLA

Passionary (Passio S. Cassiani) (Fragment). 0AD. https://collections.library.yale.edu/catalog/2004145.

APA, 6th edition

Passionary (Passio S. Cassiani) (fragment). (0 C.E.). [Prayers and devotions, Manuscripts, Medieval Italy 10th century, Manuscripts, Medieval Italy 11th century, Medieval and Renaissance Manuscript Fragments in Beinecke Library, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/2004145.