Febriansyah, M. R., E. Yuliyanto, and Yusrin. “Meta-Analysis: The Influence of The Problem-Based Learning Model on Environmental Problem-Solving Ability”. Education, Science, and Technology International Conference, vol. 2, no. 1, Aug. 2024, pp. 95-105, http://429005.jxltd.asia/index.php/edusciencetech/article/view/572.