Tipsri N, Chiatrakul K, al. et. Tourism Logistic Management of Travel Business in Chiang Rai. JTHT [internet]. 2016 Jan. 11 [cited 2026 Sep. 15];10(2):60-7. available from: https://so04.tci-thaijo.org/index.php/tourismtaat/article/view/45402