Ihsanusyauqie, Muhammad. “Pola Top-up Gopay Antara Konsumen Dengan Gojek Dalam Perspektif Hukum Islam”. Notaire 3, no. 3 (October 28, 2020): 405–426. Accessed June 8, 2025. https://e-journal.unair.ac.id/NTR/article/view/22833.