Rifki Azfa Wirdiansyah. “Design and Construction of a Web-Based Sales Performance Monitoring Information System for PT Pertamina Gas Negara (Karawang) Using Waterfall”. Journal of Artificial Intelligence and Engineering Applications (JAIEA), vol. 5, no. 1, Oct. 2025, pp. 793-0, doi:10.59934/jaiea.v5i1.1465.