ANALISIS TERHADAP RANCANGAN SISTEM PORTAL PROCUREMENT BERBASIS WEB DENGAN MODEL WATERFALL STUDI KASUS PT PERTAMINA (PERSERO). JIIC [Internet]. 2025 Mar. 11 [cited 2026 Jun. 4];2(3):4642-55. Available from: https://jicnusantara.com/index.php/jiic/article/view/2735