Loakaewnoo, T., Phumsathan, S., & Tanakanjana Phongkhieo, N. (2015). Environmental Awareness of Visitors to Erawan National Park, Kanchanaburi Province. Kasetsart Journal of Social Sciences, 36(1), 34–46. Retrieved from https://so04.tci-thaijo.org/index.php/kjss/article/view/243102