Asfahani, Moh Basarudin, and Chandra Wijaya. “Enhancing Customer Loyalty at the Indonesian Classification Bureau through Satisfaction Creation With Service Innovation and Service Quality”. International Journal of Science and Society 6, no. 2 (June 27, 2024): 767-783. Accessed May 2, 2026. http://ijsoc.goacademica.com/index.php/ijsoc/article/view/1203.