Jaramillo Cardona Gustavo, Naranjo Jaime Alberto, and González Rátiva María Claudia. “The International Certification System for Spanish As a Foreign Language in Antioquia (Colombia): Experience and Perspective”. Íkala 16, no. 2 (August 11, 2011): 201-227. Accessed September 28, 2021. https://revistas.udea.edu.co/index.php/ikala/article/view/7971.