Fauziah R, Hati SW. Analysis of Product Differentiation on Customer Satisfaction and The Effect on Customer Loyalty at Jomtea Batam. JBK [Internet]. 2026 Mar. 26 [cited 2026 Mar. 26];3(1):81-9. Available from: https://journal.iconpublisherindonesia.com/index.php/jbk/article/view/134