Putri, Y.J.J. et al. 2024. Validity and Practicality of Student Worksheet Integrated by Sound Wave Experiment Set Using Smartphone with Sound Analyzer Basic 1.10.2 and Frequency Generator 2.6 Software. Jurnal Penelitian & Pengembangan Pendidikan Fisika. 10, 1 (Jun. 2024), 123–138. DOI:https://doi.org/10.21009/1.10111.