UPGRADE SISTEM PENGAJUAN CUTI KARYAWAN BERBASIS PLATFORM PHP FRAMEWORK CODEIGNITER PADA KRAKATAU IT. Jurnal Insan Unggul, [S. l.], v. 14, n. 1, p. 25–37, 2026. Disponível em: https://jurnal-iu.sttikom-iu.ac.id/index.php/01/article/view/191. Acesso em: 1 jul. 2026.