Naklang, R., and M. Sricharoen. “Guideline of the Development of Functional Competency and Motivation of Security Officer at Suvarnabhumi Airport”. Journal of the Association of Researchers, vol. 29, no. 2, June 2024, pp. 150-63, https://so04.tci-thaijo.org/index.php/jar/article/view/271044.