“Simulasi Sistem Monitoring Pasang Surut Air Laut Dan Peringatan Dini Tsunami Menggunakan Sensor Hc-Sr04: Simulation of Sea Water Tide Monitoring and Tsunami Early Warning System Using HC-SR04 Sensor ”, JEITECH, vol. 1, no. 1, hlm. 67–75, Jun 2023, Diakses: 10 Oktober 2025. [Daring]. Tersedia pada: https://journal.unram.ac.id/index.php/jeitech/article/view/2848