RAJASINGHAM, L. Breaking Boundaries: Quality E-Learning for the Global Knowledge Society. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 4, n. 1, p. pp. 58–65, 2008. DOI: 10.3991/ijet.v4i1.664. Disponível em: https://online-journals.org/index.php/i-jet/article/view/664. Acesso em: 25 jan. 2022.