Firdaus, Muhammad Nuril. “ANALISIS PELAKSANAAN AKAD BAY‘ AL-WAFA’ PADA PEMBIAYAAN MODAL KERJA: Studi Kasus Pada KSPS BMT UGT Sidogiri Indonesia Capem Tanggulangin Sidoarjo”. El-Qist: Journal of Islamic Economics and Business (JIEB) 6, no. 2 (October 25, 2016): 1266–1278. Accessed February 20, 2026. https://jurnalfebi.uinsa.ac.id/index.php/elqist/article/view/93.