FADILLAH, Naufal. Rancang Bangun Aplikasi Mobile Untuk Optimalisasi Layanan Service Ac Menggunakan Metode Spiral (Studi Kasus: Usaha Mandiri Service). Journal of Information Systems and Business Technology, [S. l.], v. 2, n. 4, p. 683–689, 2026. Disponível em: https://journal.jci.co.id/jisbt/article/view/698. Acesso em: 2 sep. 2026.