The De vulgari eloquentia and the Commedia:

• Paradiso 26: Dante meets Adam, who gives a different account on the first language. The text of the canto and the accompanying commentary from the Commento Baroliniano are available via Digital Dante.

Barolini, Teodolinda. “Paradiso 26: Love Bites And Adam Speaks.” Commento Baroliniano, Digital Dante. New York, NY: Columbia University Libraries, 2014. https://digitaldante.columbia.edu/dante/divine-comedy/paradiso/paradiso-26/