“PROCUREMENT IN MANUFACTURING ORGANISATION: PORTFOLIO AND THE USE OF THE INTERNET”. Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri 5, no. 1 (July 13, 2004): 13–21. Accessed June 7, 2026. https://jurnalindustri.petra.ac.id/index.php/ind/article/view/16017.