KALISKI, J.; KALINOWSKI, J.; SCHUMANN, P.; SCOTT, T.; SHIN, D. Competition In The eLearning Industry: A Case Study. Journal of Business Case Studies (JBCS), [S. l.], v. 4, n. 2, p. 106–122, 2008. DOI: 10.19030/jbcs.v4i2.4760. Disponível em: https://clutejournals.com/index.php/JBCS/article/view/4760. Acesso em: 6 dec. 2022.