THE EFFECT OF PRICE, PRODUCT QUALITY, SERVICE QUALITY, AND PROMOTION ON CUSTOMER LOYALTY OF SNOWHITE SKINCARE GRAND DEVINA BEAUTY CLINIC MALANG REGENCY. KISA INSTITUTE [Internet]. 2024 Aug. 3 [cited 2025 Nov. 12];1(9):14-23. Available from: https://kisainstitute.com/index.php/kisainstitute/article/view/37