Abidin, Zainal. “Simulator Kontrol Pengisian Calcium Carbonate (Caco3 ) Dengan Sensor Ultrasonik Berbasis Mikrokontroler”. JE-Unisla 4, no. 2 (October 16, 2019): 269–277. Accessed July 3, 2024. https://jurnalteknik.unisla.ac.id/index.php/elektronika/article/view/365.