Galindo González, Leticia. “Environmental Education in Virtual Environments: An Approach to the State of the Art”. RIDE Revista Iberoamericana para la Investigación y el Desarrollo Educativo 5, no. 10 (February 10, 2016): 335 - 376. Accessed May 18, 2024. http://ride.org.mx/index.php/RIDE/article/view/195.