Zhou, Chunfang, Aparna Purushothaman, and Nikorn Rongbutsri. “Facilitating Sustainability of Education by Problem-Based Learning (PBL) and Information and Communication Technology (ICT)”. International Journal of Emerging Technologies in Learning (iJET) 8, no. 6 (November 8, 2013): pp. 50–54. Accessed May 3, 2024. https://online-journals.org/index.php/i-jet/article/view/3146.