Sultan, Sultan. “The Efforts of Muslim Scholars in Supporting Civil Society Institutions in the Era of the Crusades (490-690 AH / 1096-1391AD)”. Adab Al-Rafidayn 35, no. 40 (January 1, 2005): 90–105. Accessed October 2, 2025. https://jcis.uomosul.edu.iq/index.php/radab/article/view/33024.