To-aj, O. “The Management and the Service User’s Satisfaction at the King’s 84th Birthday Anniversary Sport Complex”. Journal of Research and Development Institute Rajabhat Maha Sarakham University, vol. 6, no. 2, Dec. 2019, pp. 13-18, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/233139.