Na Thalang S. Guideline of Developing Environmental Management for Tourism in Koh Chang, Trat Province. Dusit Thani College J [internet]. 2020 Aug. 29 [cited 2026 Oct. 12];14(2):141-56. available from: https://so01.tci-thaijo.org/index.php/journaldtc/article/view/243426