GUETL, Christian; CHANG, Vanessa. Ecosystem-based Theoretical Models for Learning in Environments of the 21st Century. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 3, n. 1, p. pp. 50–60, 2008. DOI: 10.3991/ijet.v3i1.742. Disponível em: https://online-journals.org/index.php/i-jet/article/view/742. Acesso em: 3 may. 2024.