Khattiyasuwan, S. (2021) “Service Quality Influencing Customer Loyalty of Fitness Centers in Phra Nakhon Si Ayutthaya Province”, Rajapark Journal. Bangkok, Thailand, 15(38), pp. 17–29. Available at: https://so05.tci-thaijo.org/index.php/RJPJ/article/view/249143 (Accessed: 28 April 2024).