“Tawhidic Based Economic System: A Preliminary Conception”. Al-Iqtishad: Jurnal Ilmu Ekonomi Syariah 9, no. 1 (December 13, 2016): 107–124. Accessed August 10, 2026. https://journal.uinjkt.ac.id/index.php/iqtishad/article/view/3481.