Suwannakul, E. . ., and R. . . Vongsaroj. “The Influence of the Perceived Customer Orientation of Service Employee on True Loyalty of Service Employees of Low-Cost Airline Business in Thailand”. Dusit Thani College Journal, vol. 14, no. 1, Apr. 2020, pp. 283-01, https://so01.tci-thaijo.org/index.php/journaldtc/article/view/241410.