Umi NH, Retnowati R, Istiadi Y. Design and development of a problem-based learning (PBL) e-module in environmental education for enhancing pro-environmental behaviour. InJAST [Internet]. 2025 Aug. 12 [cited 2025 Sep. 13];6(1):34-40. Available from: https://injast-pasca.unpak.ac.id/index.php/InJAST/article/view/26