Sari, D. P., Tjandrakirana, T., & Kuntjoro, S. (2018). APPLYING SCIENCE LEARNING PhET SIMULATION TO IMPROVE PROCESS SKILL AND KNOWLEDGE ASPECT OF JUNIOR HIGH SCHOOL STUDENT. JPPS (Jurnal Penelitian Pendidikan Sains), 7(2), 1496–1500. https://doi.org/10.26740/jpps.v7n2.p1496-1500