Ryan, Walter. “The Effectiveness of Traditional Vs. Audiographics Delivery in Senior High Advanced Mathematics Course”. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance 11, no. 2 (September 13, 2007): 45–55. Accessed May 3, 2024. https://ijede.ca/index.php/jde/article/view/257.