Jitdamrongsunthorn, Chayuth. “Tourism Management Administration of Chiang Khong District As Border District”. Academic Journal of Thailand National Sports University 7, no. 3 (September 1, 2015): 77–88. Accessed May 14, 2024. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/256684.