Apriliana, Frisheila, AND 		Sutopo, Wahyudi.
" ANALISA STUDI KELAYAKAN PENAMBAHAN MESIN CNC DENGAN METODE PROFITABILITY INDEX (PI) DI PT. USA SEROJA JAYA SHIPYARD BATAM" <em>PROFISIENSI: Jurnal Program Studi Teknik Industri</em> [Online], Volume 5 Number 1 (24 January 2018)