Badr, Gamal Moursi (Spring, 1978), "Islamic Law: Its Relation to Other Legal Systems", The American Journal of Comparative Law, 26 (2 [Proceedings of an International Conference on Comparative Law, Salt Lake City, Utah, February 24–25, 1977]): 187–198 [196–8], doi:10.2307/839667{{citation}}: ตรวจสอบค่าวันที่ใน: |date= (help)
