Febriana, T. and Indarini, E. 2020. Komparasi Pembelajaran Problem Based Learning (PBL) dan Problem Solving terhadap Kemampuan Berpikir Kritis Matematis Siswa Sekolah Dasar. Jurnal Basicedu. 4, 4 (Aug. 2020), 1016–1020. DOI:https://doi.org/10.31004/basicedu.v4i4.494.