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Badr, Gamal Moursi (Spring 1978). "Islamic Law: Its Relation to Other Legal Systems". The American Journal of Comparative Law. Quyển26 số2 [Proceedings of an International Conference on Comparative Law, Salt Lake City, Utah, February 24–25, 1977]. tr.187–98 [196–8]. doi:10.2307/839667. JSTOR839667.