Umam, Khotibul. “KOPERASI JASA KEUANGAN SYARIAH BAITUL MAAL WAT-TAMWIL (STUDI KASUS DI BERINGHARJO, YOGYAKARTA)”. Jurnal Media Hukum 20, no. 1 (August 18, 2013): 17. Accessed May 5, 2025. https://journal.umy.ac.id/index.php/jmh/article/view/1403.