Qosim, Nanang. “Peran Ushul Fikih Dalam Metodologi Ilmu Ekonomi Islam”. Journal of Islamic Economics Studies and Practices 1, no. 1 (June 30, 2022): 89–97. Accessed August 1, 2025. https://journal.stai-ypbwi.ac.id/index.php/JIESP/article/view/140.