Chutiphongdech, Thanavutd, and Yan Zhao. 2023. “Market Structure and Its Relationship to Tourism Revenue: Industrial Organization Perspectives from ASEAN Member Countries”. Journal of Multidisciplinary in Social Sciences 17 (3). Bangkok, Thailand:56-65. https://so03.tci-thaijo.org/index.php/sduhs/article/view/268223.