Butterworth, C. E. “Worlds of Difference: European Discourses of Toleration C. 1100-C. 1550 by Cary J. Nederman (University Park: The Pennsylvania State University Press, 2000. 157 pages.)”. American Journal of Islam and Society, vol. 20, no. 1, Jan. 2003, pp. 146-9, doi:10.35632/ajis.v20i1.1883.