Shahbodin, F., and R.A. Talib. “Designing Animated Pedagogical Agent (APA) to Scaffold Student Learning on Online Problem-Based Learning (PBL) Environment”. Journal of Engineering and Technology (JET) 1 (January 1, 2010): 23–36. Accessed May 9, 2024. https://jet.utem.edu.my/jet/article/view/100.