“SISTEM PENGELOLAAN USAHA KOPERASI SIMPAN PINJAM KOPPONTREN AL-MASHDUQIAH PATOKAN KRAKSAAN PROBOLINGGO”. IZZI: Jurnal Ekonomi Islam 4, no. 1 (January 30, 2024): 1–6. Accessed September 8, 2026. https://e-journal.ibama.ac.id/index.php/jizzi/article/view/136.