د. متناوي امحمد and ط.د. حبار عماد الدين 2024. he impact of Islamic financing formulas based on margin on the financial profitability of the economic institutions - An empirical study of a sample of economic institutions listed in the Saudi financial market during the period 2012-2020. Journal of North African Economies. 19, 31 (Feb. 2024), 171–188.