GARCÍA-PEÑALVO, Francisco J.; CONDE GONZÁLEZ, Miguel; ALIER, Marc; COLOMO-PALACIOS, Ricardo. A case study for measuring Informal Learning in PLEs. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 9, n. 7, p. pp. 47–55, 2014. DOI: 10.3991/ijet.v9i7.3734. Disponível em: https://online-journals.org/index.php/i-jet/article/view/3734. Acesso em: 27 apr. 2024.