CHANG, V.; GÜTL, C.; KOPEINIK, S.; WILLIAMS, R. Evaluation of Collaborative Learning Settings in 3D Virtual Worlds. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 4, n. 7, p. pp. 6–17, 2009. DOI: 10.3991/ijet.v4i7.1112. Disponível em: https://online-journals.org/index.php/i-jet/article/view/1112. Acesso em: 16 jan. 2022.