RUIZ BADILLA, Silvia. Distance Education: Notes about Its Origins and Fair Value as a Practical and Powerful Resource for Permanent Education in Light of Intergenerational Change. Ensayos Pedagógicos Journal, [S. l.], p. 71–86, 2009. DOI: 10.15359/rep.esp-09.5. Disponível em: https://www.revistas.una.ac.cr/index.php/ensayospedagogicos/article/view/5737.. Acesso em: 17 jul. 2024.