Puwittayathorn, Tanayu. “Development of Human Resource Competency in Koh Samui District Surat Thani Province”. Parichart Journal 32, no. 1 (April 19, 2019): 133–150. Accessed April 29, 2024. https://so05.tci-thaijo.org/index.php/parichartjournal/article/view/99150.