Kallayanapattharasit, Ridthipat, Nurat Puankhamma, and Nuanchan Changchit. 2019. “Legal Measures for Chinese Tourists With Personal Vehicles for Cross Border Tourism via The Fourth Friendship Bridge Between Thai-Laos (Chiang Khong – Houayxay) (in Thai)”. CONNEXION Journal of Humanities and Social Sciences 8 (2):154-79. https://so05.tci-thaijo.org/index.php/MFUconnexion/article/view/241045.