Feo, M. Rec. D. E. Rhodes, The Incunabula of Siena (in Essays in Honour of Victor Scholderer, Mainz 1970, pp. 337-348). ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI LETTERE E FILOSOFIA, 3(4), 1185. Recuperato da https://journals.sns.it/index.php/annalilettere/article/view/2356