Parra de Marroquin, Omayra, and Lina Clarizia Corredor. “Open University Center of the Pontifical Javeriana University, Colombia”. The International Review of Research in Open and Distributed Learning 2, no. 2 (January 1, 2002). Accessed January 28, 2023. https://www.irrodl.org/index.php/irrodl/article/view/56.