Rodriguez-Pichardo, C., A. Avila-Ortega, M. Gonzalez-Medina, and A. Avila-Rodriguez. “Fitting in a Blended Learning Educational System”. Journal of Progressive Research in Social Sciences, Vol. 5, no. 2, Sept. 2017, pp. 380-8, http://scitecresearch.com/journals/index.php/jprss/article/view/1246.