Chaemlek, Adunyarat. “Self-development of Employees in Air Freight Forwarding Companies: at Suvarnabhumi Airport”. KBU Journal of Aviation Management:KBUJAM 2, no. 3 (December 31, 2024): 8–22. accessed June 27, 2025. https://so19.tci-thaijo.org/index.php/KBUJAM/article/view/1248.