Vega-Carrero, Sandra, Manuel Pulido, and Nancy Esther Ruiz-Gallego , trans. “Teaching English As a Second Language at a University in Colombia That Uses Virtual Environments: A Case Study”. Revista Electrónica Educare 21, no. 3 (August 6, 2017): 1–21. Accessed April 27, 2024. https://www.revistas.una.ac.cr/index.php/EDUCARE/article/view/7914.