Ruangariyapuk, N., P. Seetong-on, H. Boulom, K. Klinmalai, W. Tanwateam, S. Wicheinkorn, C. Huabkrathok, and S. Kaewthanasin. “Competency and Service Quality Correlation to the Image of Suvarnabhumi Airport”. Research and Development Journal, Loei Rajabhat University, vol. 18, no. 66, Dec. 2023, pp. 11-21, https://so05.tci-thaijo.org/index.php/researchjournal-lru/article/view/263101.