Nunung Nurlaela. “E-Money: Tinjauan Fiqih Kontemporer”. Mukaddimah: Jurnal Studi Islam 3, no. 2 (March 2, 2022): 293–314. Accessed January 31, 2025. https://ejournal.uin-suka.ac.id/pusat/mukaddimah/article/view/2729.