“ANALISIS TERHADAP RANCANGAN SISTEM PORTAL PROCUREMENT BERBASIS WEB DENGAN MODEL WATERFALL STUDI KASUS PT PERTAMINA (PERSERO)” (2025) Jurnal Intelek Insan Cendikia, 2(3), pp. 4642–4655. Available at: https://jicnusantara.com/index.php/jiic/article/view/2735 (Accessed: 5 June 2026).