1.
Phommatham S, Singsitha S, Keophavong S, ຈະເລີນສຸກ ທ, Thachansi K. Estimate economic value of tourism in Champasack province by using travel cost method . cusj [Internet]. 2020 Jul. 4 [cited 2026 Apr. 29];4(4):28-46. Available from: http://cu-journal.com/index.php/files/article/view/29