DUBA, William O. Fragments of Francesco d’Appignano’s Improbatio. Picenum Seraphicum - Rivista di studi storici e francescani, [S. l.], v. 36, p. 101–122, 2023. Disponível em: https://rivisteopen.unimc.it/index.php/pi_ser/article/view/3215. Acesso em: 27 nov. 2024.