Ulum, Bahrul, and Mufarrohah. “Kontribusi Ibnu Khaldun Terhadap Perkembangan Ekonomi Islam”. Iqtishodia: Jurnal Ekonomi Syariah 1, no. 2 (September 21, 2016): 17–32. Accessed April 20, 2024. https://ejournal.alqolam.ac.id/index.php/iqtishodia/article/view/62.