Aland Gordon Sahlan (2021) “Simulasi Alat Penjaring Sampah Otomatis Berbasis Sensor Ultrasonic HC-SR04”, SinarFe7, 4(1), pp. 463–465. Available at: https://www.journal.fortei7.org/index.php/sinarFe7/article/view/97 (Accessed: 30 July 2026).