Zulkepli, M. I. S., and M. T. Mohamad. “Analisis Hiyal Dalam Produk Deposit Berasaskan Kontrak Tawarruq Di Perbankan Islam Malaysia: Hiyal Analysis in Deposit Product Based on Tawarruq Contract in Malaysian Islamic Banking”. Online Journal of Research in Islamic Studies, vol. 6, no. 1, Mar. 2019, pp. 43-59, https://jrmg.um.edu.my/index.php/RIS/article/view/18847.