APRILIANA, Frisheila Sely; 						SUTOPO, Wahyudi.
 ANALISA STUDI KELAYAKAN PENAMBAHAN MESIN CNC DENGAN METODE PROFITABILITY INDEX (PI) DI PT. USA SEROJA JAYA SHIPYARD BATAM.
<strong>PROFISIENSI: Jurnal Program Studi Teknik Industri</strong>, [S.l.], v. 5, n. 1, jan. 2018.
ISSN 2598-9987.
Available at: &lt;<a href="https://www.journal.unrika.ac.id/index.php/jurnalprofisiensi/article/view/1149" target="_new">https://www.journal.unrika.ac.id/index.php/jurnalprofisiensi/article/view/1149</a>&gt;. Date accessed: 15 feb. 2026.
doi: <a href="https://doi.org/10.33373/profis.v5i1.1149">https://doi.org/10.33373/profis.v5i1.1149</a>.