Puvanont, P., Chancharoen, D., Tanchaisak, K., & Wattanapanit, N. (2022). A Competency Development Model for Hotel Personnel: A Case Study of the Zign Hotel Chain. Ph.D. In Social Sciences Journal, 12(2), 424–440. Retrieved from https://so05.tci-thaijo.org/index.php/phdssj/article/view/243212