Sonia, Dara, et al. “THE EFFECT OF LOKALATE PRODUCT QUALITY ON THE CUSTOMER LOYALTY THROUGH BONUS PACK PROMOTION IN JAMBI CITY”. JOURNAL OF BUSINESS STUDIES AND MANAGEMENT REVIEW, vol. 5, no. 1, Dec. 2021, pp. 18-26, doi:10.22437/jbsmr.v5i1.16655.