MLA

Ponti, Antonino. Rhomitypion. 1523. https://collections.library.yale.edu/catalog/10947073.

APA, 6th edition

Ponti, A. (1523). Rhomitypion [Manuscripts, Renaissance Italy 16th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/10947073.