ผิวแดงศ., วงษ์มณฑาเ., ณ ถลางช. and อันทะไชยส. (2019) “The Development Strategic Tourism Business in Udonthani Province To Enhance Competitive Advantage”, Journal of Roi Et Rajabhat University, 13(1), pp. 195-205. Available at: https://www.tci-thaijo.org/index.php/reru/article/view/186045 (Accessed: 15October2019).