Ningrum, Izza Eka. “Analisis Kebutuhan Bahan Ajar Matematika Berpendekatan Problem Based Learning (PBL)”. TSAQOFAH 3, no. 3 (May 17, 2023): 509-514. Accessed July 2, 2024. https://ejournal.yasin-alsys.org/index.php/tsaqofah/article/view/1553.