Somrak, Witsathit. “Cultural and Heritage Tourism Management: The Value of Cultural and Heritage Assets in Thailand Case Study Ubon Ratchathani Province”. Journal of Cultural Approach 21, no. 39 (March 12, 2020): 96–109. Accessed May 5, 2024. https://so02.tci-thaijo.org/index.php/cultural_approach/article/view/240448.