เทพประภักษ์ วัชรวีร์. “Evaluation for Training Program of Centra Central Station Hotel Bangkok”. Integrated Social Science Journal, Mahidol University 3, no. 1 (September 19, 2018): 192–210. Accessed May 3, 2024. https://so02.tci-thaijo.org/index.php/isshmu/article/view/146359.