Chang, Vanessa, Christian Gütl, Simone Kopeinik, and Robert Williams. “Evaluation of Collaborative Learning Settings in 3D Virtual Worlds”. International Journal of Emerging Technologies in Learning (iJET) 4, no. 7 (November 12, 2009): pp. 6–17. Accessed April 20, 2024. https://online-journals.org/index.php/i-jet/article/view/1112.