Utama, Firman Yasa, and Hendra Wibowo. “ANALISIS PREVENTIVE MAINTENANCE TERHADAP SUBMERSIBLE PUMP 100 DLC5 7,5 T DALAM INSTALASI PENGOLAHAN AIR LIMBAH”. Indonesian Journal of Engineering and Technology (INAJET), vol. 1, no. 1, Mar. 2022, pp. 35-43, doi:10.26740/inajet.v1n1.p35-43.