MousaAbuEid ,Qasim. “Istisna’a  Contract As a Financing Tool for Industrial Clusters”. Finance and Business Economies Review 6, no. 4 (December 31, 2022): 252–265. Accessed September 1, 2024. https://jiamcs.centre-univ-mila.dz/index.php/fber/article/view/126.