Tunggak, Buerah, and Mohd Fairuz Tamjis. “KONSEP AKAD AL-JU’ALAH DI DALAM PERUSAHAAN MULTI-LEVEL MARKETING (MLM) PATUH SYARIAH (THE CONCEPT OF AL-JU’ALAH CONTRACT IN SYARIAH COMPLIANT MULTI-LEVEL MARKETING COMPANY (MLM) )”. UMRAN - Journal of Islamic and Civilizational Studies, vol. 2, no. 1, Mar. 2015, doi:10.11113/umran2015.2n1.11.