Risni, R., Hutahaean, S.D. and Bustan, A. 2021. Penerapan Model Problem Based Learning (PBL) pada Materi Pokok Suhu dan Kalor. Bahana Pendidikan: Jurnal Pendidikan Sains. 3, 1 (Jun. 2021), 1–9. DOI:https://doi.org/10.37304/bpjps.v3i1.3680.