Sukma, Andhi, Roeshartono Roespinoedji, and Gusni Roespinoedji. “THE ROLE OF CUSTOMER EXPECTATIONS, PERCEIVED QUALITY, AND PERCEIVED VALUE IN DEVELOPING SATISFACTION AND CUSTOMER LOYALTY CASE STUDY: SHAMPO PRODUCTS”. International Journal of Psychosocial Rehabilitation 24, no. 1 (February 29, 2020): 2372–2382. Accessed August 5, 2025. https://psychosocial.com/index.php/ijpr/article/view/478.