de la Varre, C., Keane, J., & Irvin, M. J. (2011). Dual Perspectives on the Contribution of On-Site Facilitators to Teaching Presence in a Blended Learning Environment. International Journal of E-Learning & Distance Education Revue Internationale Du E-Learning Et La Formation à Distance, 25(3). Retrieved from https://ijede.ca/index.php/jde/article/view/751