MLA

Puldericus, Laurentius. Breviarum Decreti. 0AD. https://collections.library.yale.edu/catalog/32342944.

APA, 6th edition

Puldericus, L. (0 C.E.). Breviarum decreti [Manuscripts, Medieval Germany 15th century, Medieval and Renaissance Manuscripts in Beinecke Library, Medieval and Renaissance Manuscript Fragments in Beinecke Library]. https://collections.library.yale.edu/catalog/32342944.