MLA

Macrobius, Ambrosius Aurelius Theodosius. Saturnalia. 0AD. https://collections.library.yale.edu/catalog/11021570.

APA, 6th edition

Macrobius, A. A. T. (0 C.E.). Saturnalia [Manuscripts, Medieval Italy 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/11021570.