Thongchai , Jeeradist. “INTEGRATING A-CDM AND SERVQUAL FOR IMPROVED SERVICE QUALITY IN THE AVIATION INDUSTRY”. SADI International Journal of Science, Engineering and Technology (SIJSET), vol. 9, no. 2, Apr. 2023, pp. 1-13, https://sadijournals.org/index.php/SIJSET/article/view/240.