Tan, C. C. ., N. . . Phakdeephirot, and W. . . Sereewichayaswat. “Fieldtrip Advantages for Tourism Students: Contributing Towards Hierarchical Aspect of the Stimulus-Organism-Response (S-O-R) Theory”. Dusit Thani College Journal, vol. 13, no. 3, Apr. 2020, pp. 164-79, https://so01.tci-thaijo.org/index.php/journaldtc/article/view/241104.