Nasrul Mahruf Aznawi, Siti Dian Fachroza, Ermaliza, Dedek Juliani Ritonga, & Suhardi. (2026). PENERAPAN WATERFALL SDLC PADA PERANCANGAN SISTEM PENGELOLAAN IZIN KELUAR KANTOR DI KANREG VI BKN MEDAN. Journal of Software Engineering and Information System (SEIS), 6(1), 1–7. https://doi.org/10.37859/seis.v6i1.10788