Setiawan, F.B. et al. 2023. Design of Audiosonic Frequency Wave Therapy Tool With Arduino Mega-Based Spectrum Analyzer Monitoring. Protek : Jurnal Ilmiah Teknik Elektro. 10, 1 (Jan. 2023), 33–38. DOI:https://doi.org/10.33387/protk.v10i1.5536.