Registrum brevium and Novae narrationes.
MLA
Registrum Brevium and Novae Narrationes. 0AD. https://collections.library.yale.edu/catalog/10267668.
APA, 6th edition
Registrum brevium and Novae narrationes. (0 C.E.). [Decorated initials, Illuminated manuscripts, Rubrics]. https://collections.library.yale.edu/catalog/10267668.