MLA

Caesar, Julius. Commentarii De Bello Gallico. 1476. https://collections.library.yale.edu/catalog/10269855.

APA, 6th edition

Caesar, J. (1476). Commentarii de bello Gallico [Translations, Manuscripts, Medieval Burgundy (France) 15th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10269855.