Soto-SantiagoSandra L., RiveraRosita L., and MazakCatherine M. “Con Confianza: The Emergence of the Zone of Proximal Development in a University ESL Course”. HOW Journal 22, no. 1 (April 21, 2015): 10-25. Accessed March 26, 2023. https://www.howjournalcolombia.org/index.php/how/article/view/132.