Nakwatchara, Sakda, Prayong Meejaisue, and Norapol Chinuntdej. “The Relationship of Factors Affecting the Happy Work of Thai Pilots”. Rajapark Journal 16, no. 47 (August 5, 2022): 332–348. Accessed May 8, 2024. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/257002.