Kausar, Amin, and Udin Komarudin. “Perancangan Dan Pembuatan Alat Pembersih Koin Menggunakan Ultrasonik 50 W 40 KHz”. Journal of Industrial Science and Mechanical Engineering, vol. 1, no. 2, Sept. 2026, pp. 41-62, https://journal.widyatama.ac.id/index.php/jisme/article/view/3171.