Jamal, Ridwan, and Nurul Azzochrah. “Evaluating Online Phone Swap Transactions Under Sharia Economic Law in Manado”. Maqrizi: Journal of Economics and Islamic Economics 4, no. 2 (December 15, 2024): 91-103. Accessed June 26, 2025. https://ejournal.iain-manado.ac.id/index.php/maqrizi/article/view/1194.