Rahayu, Dinar, and Encep Riswan Suherlan. “Development of Website-Based Outsourcing Services Negotiation System Using Extreme Programming Method at PT. XYZ”. SISINFO : Jurnal Sistem Informasi dan Informatika 7, no. 2 (August 27, 2025): 213–228. Accessed January 17, 2026. https://jurnalunibi.unibi.ac.id/ojs/index.php/SisInfo/article/view/1336.