BARRÓN RUIZ, Ángela; MUÑOZ RODRÍGUEZ, J. M.; PÉREZ SÁNCHEZ, L. Global portal of environmental education. An experience of innovative education in the virtual training space. Education in The Knowledge Society, [S. l.], v. 9, n. 3, p. 216–236, 2008. DOI: 10.14201/eks.16735. Disponível em: https://revistas.usal.es/tres/index.php/eks/article/view/16735. Acesso em: 14 mar. 2025.