“UPGRADE SISTEM PENGAJUAN CUTI KARYAWAN BERBASIS PLATFORM PHP FRAMEWORK CODEIGNITER PADA KRAKATAU IT”, J. Insan Unggul, vol. 14, no. 1, pp. 25–37, Apr. 2026, Accessed: Jul. 01, 2026. [Online]. Available: https://jurnal-iu.sttikom-iu.ac.id/index.php/01/article/view/191