Adi Iswanto. “The Effect of Product Quality and Product Innovation on Customer Satisfaction at UD Rohaya Tani Brastagi ”. Enrichment : Journal of Management 13, no. 2 (June 15, 2023): 836-845. Accessed April 23, 2026. https://enrichment.iocspublisher.org/index.php/enrichment/article/view/1345.