MLA

Sermones Quarelli. 0AD. https://collections.library.yale.edu/catalog/11394882.

APA, 6th edition

Sermones quarelli. (0 C.E.). [Early works to 1800, Manuscripts, Medieval England 13th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/11394882.