Hasmar, F. A. ., Siswoyo, S., & Rustana, C. E. . (2020). PENGEMBANGAN VIDEO PEMBELAJARAN GELOMBANG BUNYI MENGGUNAKAN MODEL PROBLEM BASED LEARNING (PBL). PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL), 9(1), SNF2020PF-131. https://doi.org/10.21009/03.SNF2020.02.PF.19