PERMANA RSE. PROMOTION EFFECT ANALYSIS THROUGH DIRECT BONUS IN PACKAGING PRODUCTS, PRODUCT QUALITY, AND BRAND TRUST INTERESTS AGAINST CONSUMERS BUY LIFEBUOY SOAP. jurnalmanajerial [Internet]. 2018 Aug. 15 [cited 2025 May 22];1(1):91-8. Available from: https://journal.umg.ac.id/index.php/manajerial/article/view/431