Che Abdullah, A. S. “KONTRAK MUSAMMA JUSTIFIKASINYA DALAM TRANSAKSI KEWANGAN ISLAM SEMASA: Nominate Contracts: Its Justifications in Contemporary Islamic Financial Transactions”. Jurnal Syariah, vol. 19, no. 3, Sept. 2011, pp. 283-00, http://mjs.um.edu.my/index.php/JS/article/view/22634.