MLA

Bartholomaeus, de Chaimis. Confessionale. 0AD. https://collections.library.yale.edu/catalog/10965982.

APA, 6th edition

Bartholomaeus, de C. (0 C.E.). Confessionale [Manuscripts, Medieval Italy 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10965982.