Winarto, Sonden. “OPTIMASI ENERGI POMPA”. Swara Patra : Majalah Ilmiah PPSDM Migas 6, no. 2 (December 31, 2016). Accessed May 14, 2024. http://ejurnal.ppsdmmigas.esdm.go.id/sp/index.php/swarapatra/article/view/175.