ALKAFF, Abdullah; QOMARUDIN, Mochamad Nur; ALKAFF, Sylmina Dalily; BILFAQIH, Yusuf. Modelling Online Course Services and Comparison of its Major Providers. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 13, n. 01, p. pp. 65–81, 2018. DOI: 10.3991/ijet.v13i01.7528. Disponível em: https://online-journals.org/index.php/i-jet/article/view/7528. Acesso em: 25 apr. 2024.