NASRUL MAHRUF AZNAWI; SITI DIAN FACHROZA; ERMALIZA; DEDEK JULIANI RITONGA; SUHARDI. PENERAPAN WATERFALL SDLC PADA PERANCANGAN SISTEM PENGELOLAAN IZIN KELUAR KANTOR DI KANREG VI BKN MEDAN. Journal of Software Engineering and Information System (SEIS), [S. l.], v. 6, n. 1, p. 1–7, 2026. DOI: 10.37859/seis.v6i1.10788. Disponível em: https://ejurnal.umri.ac.id/index.php/SEIS/article/view/10788. Acesso em: 25 apr. 2026.