Costantino, Gustavo Daniel, Juliana Elisa Raffaghelli, Guadalupe Alvarez, and Lourdes Moran. “Qualitative Research Methods to Analyze Learning 2.0 Processes: Categorization, Recurrence, Saturation and Multimedia Triangulation”. Journal of e-Learning and Knowledge Society 8, no. 2 (May 28, 2012). Accessed May 14, 2021. https://www.je-lks.org/ojs/index.php/Je-LKS_EN/article/view/614.