Ahmad @ Salleh, S., E. Yaakub, and M. S. Shahruddin. “Fiat Currency : Halal That Which Is Not Tayyib: Wang Fiat: Halal Yang Tidak Tayyib”. Journal of Contemporary Islamic Studies, vol. 3, no. 2, July 2025, https://journal.uitm.edu.my/ojs/index.php/JCIS/article/view/8132.