SIRKEMAA, S. .; VARPELAIDE, H. . The Need for Digital Learning Environments. International Journal of Learning, Teaching and Educational Research, [S. l.], v. 17, n. 6, p. 167–181, 2018. Disponível em: https://ijlter.net/index.php/ijlter/article/view/672. Acesso em: 16 may. 2026.