MLA

Origen. Homilia De Lectione Maria Stabat Ad Monumentum. 0AD. https://collections.library.yale.edu/catalog/10517651.

APA, 6th edition

O. (0 C.E.). Homilia de lectione Maria stabat ad monumentum [Manuscripts, Medieval Netherlands 12th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10517651.