Hafizhah N, Hidayat AT, Wijayanti Y. Optimalisasi Pengembangan Sistem Presensi Karyawan Menggunakan Extreme Programming dan Teknologi QR Code. J. Janitra Inform. Sis. Inf. [Internet]. 2025 Apr. 27 [cited 2026 Oct. 7];5(1):1-13. Available from: https://janitra.org/index.php/home/article/view/199