Ndaru choyo Gumilang (2024) “Istisna Agreement Transactions in Online Buying and Selling Activities: Transaksi Akad Istisna’ dalam Kegiatan Jual Beli”, Al-Fatawa: Jurnal Hukum Islam dan Pranata Sosial, 1(2), pp. 97–112. Available at: https://journal.syamilahpublishing.com/fatawa/article/view/261 (Accessed: 17 April 2026).