Eilmelda, Yenny, et al. “Pengaruh Model Problem Based Learning (PBL) Untuk Meningkatkan Hasil Belajar Matematika Di SDN Sumokembangsri 01”. Innovative: Journal Of Social Science Research, vol. 3, no. 2, May 2023, pp. 3510-23, https://j-innovative.org/index.php/Innovative/article/view/696.