Tatiyanantakul, W. “Guidelines for Developing Marketing Strategies of River Tourism in Nakhon Phanom Province”. Journal of Multidisciplinary Academic Research and Development (JMARD), vol. 6, no. 3, Sept. 2024, pp. 21-44, https://he02.tci-thaijo.org/index.php/JMARD/article/view/265721.