Chuminthachak, Sirinphan. “Human Resource Development of Small Hotel Business in Special Economic Zone, Chiangrai Province”. Journal of Management Science Chiangrai Rajabhat University 14, no. 2 (July 2, 2019): 1–15. Accessed April 20, 2024. https://so03.tci-thaijo.org/index.php/jmscrru/article/view/230932.