Nursanti, Metasari Dian, and Tomoliyus Tomoliyus. “Factors Affecting Satisfaction and Loyalty of Health and Fitness Club Customers”. KnE Social Sciences 6, no. 2 (December 29, 2021): 381–393. Accessed May 27, 2022. https://knepublishing.com/index.php/KnE-Social/article/view/10002.