Phumalee, Usaradee, Noppawan Tanakanjana Phongkhieo, Dachanee Emphandhu, and Somskaow Bejranonda. 2018. “Touristic Ecological Footprint in Mu Ko Surin National Park”. Kasetsart Journal of Social Sciences 39 (1):1-8. https://so04.tci-thaijo.org/index.php/kjss/article/view/242376.