Luekveerawattana, R. (2019) “The Study of Comparing Satisfaction of Visitors at Ecotourism Site, Koh Kret, Nonthaburi”, Journal of Multidisciplinary Academic Research and Development (JMARD). Bangkok, Thailand, 1(2), pp. 42–52. available at: https://he02.tci-thaijo.org/index.php/JMARD/article/view/173798 (accessed: 29 September 2026).