PHAM, N. T. T. Excellence in Internal Quality Assurance: An Empirical Study in United States. Vietnam Journal of Education, [S. l.], v. 5, n. 3, p. 54–62, 2021. DOI: 10.52296/vje.2021.131. Disponível em: https://vje.vn/index.php/journal/article/view/131. Acesso em: 9 feb. 2023.