MLA

Ludolphus, de Luco. Flores Grammaticae (Fragment). 0AD. https://collections.library.yale.edu/catalog/2004081.

APA, 6th edition

Ludolphus, de L. (0 C.E.). Flores Grammaticae (fragment). [Manuscripts, Medieval Germany 14th century, Medieval and Renaissance Manuscript Fragments in Beinecke Library, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/2004081.