Syaifuddin, Syaifuddin, Putut Marwoto, Retno Sri Iswari, Edy Cahyono, and Sarwi Sarwi. 2022. “Development of Sound Experimentation Tool Using Android-Based Sound Analysis Oscilloscope Software”. Jurnal Penelitian Pendidikan IPA 8 (6):2641-46. https://doi.org/10.29303/jppipa.v8i6.1939.