Ramadhani, Annisa. “The Effect of PBL-Based LPKD on Critical Thinking Skills of VII Grade Students at MTs Al Uswah Bergas on Environmental Pollution Material”. Annual International Conference on Islamic Education for Students 1, no. 1 (June 22, 2022). Accessed May 7, 2024. https://conferences.uinsalatiga.ac.id/index.php/aicoies/article/view/266.