Sihabutr C. Knowledge of Sustainable Tourism and Environmental Awareness: Luang Prabang, Laos PDR. soc sci hum utcc [internet]. 2019 Jun. 18 [cited 2026 Aug. 30];35(3):14-28. available from: https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/195550