Percival, Jennifer Catherine, and Bill Muirhead. “Prioritizing the Implementation of E-Learning Tools to Enhance the Learning Environment”. International Journal of E-Learning & Distance Education Revue Internationale Du E-Learning Et La Formation à Distance, vol. 23, no. 1, Feb. 2009, pp. 89-106, https://www.ijede.ca/index.php/jde/article/view/47.