RIDHO, M.; WITARSA, R.; DAULAY, M. I.; NURHASWINDA, N.; PEBRIANA, P. H. Improving Mastery of Science Concepts Using Problem Based Learning Models in Class V in Elementary School. Edumaspul: Jurnal Pendidikan, v. 6, n. 2, p. 3193-3202, 1 out. 2022.