Esentaş, Melike, Kadir Yıldız, and Pınar Güzel. “Examining the Service Quality of Private Gym Customers in Terms of Some Demographic Variables”. Sportif Bakış: Spor ve Eğitim Bilimleri Dergisi 7, no. S1 (June 30, 2020): 11–25. Accessed March 13, 2025. https://sportifbakis.com/index.php/pub/article/view/143.