Optimal Hajj Funds Management by Islamic Bank. ETIKONOMI, [S. l.], v. 18, n. 2, p. 303–314, 2019. DOI: 10.15408/etk.v18i2.10938. Disponível em: https://journal.uinjkt.ac.id/etikonomi/article/view/10938. Acesso em: 23 feb. 2026.