สุขเกษม มณีรัตน์. “Book Review of Eco Tourism and Sustainable Tourism: New Perspectives and Studies”. Parichart Journal 29, no. 2 (October 25, 2016): 231–248. Accessed May 2, 2024. https://so05.tci-thaijo.org/index.php/parichartjournal/article/view/69474.