Ballacci, Giuseppe. «Cary J. Nederman: Worlds of Difference: European Discourses of Toleration, C. 1100- C. 1550. The Pennsylvania State University Press, University Park, Pennsylvania». Foro Interno, vol. 4, diciembre de 2004, pp. 192-4, https://revistas.ucm.es/index.php/FOIN/article/view/FOIN0404110192A.