Özdener, Nesrin, and Bekir Çelen. “The Effect of Forming a Score-Based Competitive System in a Cyber-Drilling Atmosphere for Learning and Motivation”. Journal of Human Sciences 6, no. 2 (August 24, 2009): 222–238. Accessed May 12, 2024. https://www.j-humansciences.com/ojs/index.php/IJHS/article/view/776.