Ramadhany, Siti Nurjanah, and Ade Eviyanti. “Designing Web Based Offering and Sales Information System (Case Study : PT. Daya Berkah Sentosa Nusantara): Perancangan Sistem Informasi Penawaran Dan Penjualan Berbasis Web (Studi Kasus : PT. Daya Berkah Sentosa Nusantara)”. Procedia of Engineering and Life Science 1, no. 2 (July 17, 2021). Accessed July 1, 2025. https://pels.umsida.ac.id/index.php/PELS/article/view/1030.