Antiphonary (fragment).
MLA
Antiphonary (Fragment). 0AD. https://collections.library.yale.edu/catalog/2004053.
APA, 6th edition
Antiphonary (fragment). (0 C.E.). [Manuscripts, Medieval Germany 13th century, Manuscripts, Medieval Germany 14th century, Manuscripts, Medieval Austria 13th century, Manuscripts, Medieval Austria 14th century, Medieval and Renaissance Manuscript Fragments in Beinecke Library, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/2004053.