Lubis SPWL, Suryadarma GP, Paidi, Yanto BE. Improving environmental literacy through the development of problem-based learning models that incorporate local wisdom. WJER [Internet]. 2024 May 30 [cited 2024 Nov. 23];14(1):33-48. Available from: https://un-pub.eu/ojs/index.php/wjer/article/view/9472