Missal (fragment).
MLA
Missal (Fragment). 0AD. https://collections.library.yale.edu/catalog/2004102.
APA, 6th edition
Missal (fragment). (0 C.E.). [Early works to 1800, Manuscripts, Medieval Germany 15th century, Medieval and Renaissance Manuscript Fragments in Beinecke Library, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/2004102.