C. J. Lesko Jr., J. L. Pickard. “Data in Depth: Web 3-D Technologies Provide New Approaches to the Presentation of Course Content”. Journal of Online Engineering Education 1, no. 2 (December 30, 2010). Accessed June 16, 2024. https://www.onlineengineeringeducation.com/index.php/joee/article/view/13.