Lubis, Ilham, and Ali Basrah Pulungan. “Rancang Bangun Alat Monitoring Kualitas Air Berbasis Online”. JTEIN: Jurnal Teknik Elektro Indonesia 4, no. 2 (August 2, 2023): 462 – 472. Accessed September 2, 2026. http://jtein.ppj.unp.ac.id/index.php/JTEIN/article/view/398.