Assessing the Sustainable Development of Vietnam’s Tourism Industry. European Journal of Engineering and Technology Research, [S. l.], v. 4, n. 8, p. 27–31, 2019. DOI: 10.24018/ejeng.2019.4.8.1464. Disponível em: https://mail.ej-eng.org/index.php/ejeng/article/view/1464. Acesso em: 22 oct. 2025.