Rahmawan, G., and V. P. Banwuati. “TESTING HALAL LABELS, PRODUCT QUALITY, CELEBRITY ENDORSER AND REFERENCE GROUP OF WARDAH PURCHASE DECISIONS”. Primanomics : Jurnal Ekonomi & Bisnis, vol. 18, no. 2, May 2020, pp. 48-55, doi:10.31253/pe.v18i2.351.