pratama, yuki, 		Manullang, Togu, 		Wibisono, Muhammad, 		Ditoswar, Arya, AND 		hasibuan, Fardin.
" Effectiveness Analysis Of Centrifugal Pump Maintenance System For Performance Optimization At Pt. Sumber Air Abadi" <em>METALOGRAM</em> [Online], (18 August 2025)