Wongwattana, Unchalee. 2020. “Uttaradit “Laos”: A Stream-descending Ethnic and Ethnic Cultural Tourism: Uttaradit ‘Laos’: A Stream-descending Ethnic and Ethnic Cultural Tourism”. Mekong-Salween Civilization Studies Journal 11 (1):66-101. https://so04.tci-thaijo.org/index.php/jnuks/article/view/167169.