MLA

Macer, Floridus. Macer Floridus. 0AD. https://collections.library.yale.edu/catalog/10965985.

APA, 6th edition

Macer, F. (0 C.E.). Macer Floridus [Manuscripts, Medieval Germany 12th century, Manuscripts, Medieval Italy 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10965985.