Hassan, Nurul Aisyah Binti, and Hafiz Bin Mohd Razak. “Problem-Based Learning Implementation in Elementary Schools: A Case Study in Kuala Lumpur Primary Schools”. TRICKS : Journal of Education and Learning Practices, vol. 2, no. 5, July 2024, pp. 1-11, https://journal.echaprogres.or.id/index.php/tricks/article/view/19.