Navarro, D., y M. Piñeiro Ruíz. «DIDACTIC STRATEGIES FOR TEACHING ENGLISH AS A FOREIGN LANGUAGE IN SEVENTH AND EIGHT GRADES IN SECONDARY SCHOOLS IN COSTA RICA». Káñina, vol. 36, n.º 2, enero de 2013, https://revistas.ucr.ac.cr/index.php/kanina/article/view/6479.