"INTRODUCTION TO ELECTRONIC CONTRACTS AND ITS VALIDITY IN ISLĀMIC LAW". Khairulummah 2, no. 01 (ديسمبر 22, 2022): 33–43. تاريخ الوصول نوفمبر 5, 2025. https://www.khairulumma.com/index.php/about/article/view/39.