Timcenko, Olga, and Radoslav Stojic. “On Problem Based Learning and Application to Computer Games Design Teaching”. International Journal of Emerging Technologies in Learning (iJET) 7, no. S1 (February 15, 2012): pp. 21–27. Accessed April 25, 2024. https://online-journals.org/index.php/i-jet/article/view/1909.