Hutayon, R., and S. Methiyothin. “MODEL HOTEL BASED ON THE LEARNING OF HIS MAJESTY’S PRINCIPLES”. Journal of Graduate School of Commerce-Burapha Review, vol. 15, no. 2, Dec. 2020, pp. 31-43, https://so02.tci-thaijo.org/index.php/GSC/article/view/240247.