Thanabordeekij, P. “The Inflence of Perceived Service Quality on Fitness Membership Renewal of XYZ Fitness”. Journal of Management Sciences Suratthani Rajabhat University, vol. 5, no. 2, Oct. 2018, pp. 67-84, https://so03.tci-thaijo.org/index.php/msj/article/view/148697.