Halimatus Sa’diyah, Umalihayati, Ratna Hidayah, Moh Salimi, Laksmi Evasufi Widi Fajari, Mashudi, and Syarifah Aini. “The Effect of Problem Based Learning Model on Critical Thinking Skills in Elementary School: A Meta Analysis Study”. Jurnal Iqra’ : Kajian Ilmu Pendidikan 9, no. 1 (June 30, 2024): 135–160. Accessed August 23, 2025. https://journal.iaimnumetrolampung.ac.id/index.php/ji/article/view/4456.