Harefa, D. et al. 2021. PENINGKATAN HASIL BELAJAR MELALUI MODEL PROBLEM BASED LEARNING TERINTERGRASI BRAINSTORMING BERBASIS MODUL. HISTOGRAM: Jurnal Pendidikan Matematika. 4, 2 (Jan. 2021), 270–289. DOI:https://doi.org/10.31100/histogram.v4i2.588.