Putri, Danindya Puput Muliana, and Heru Supriyono. “Rancang Bangun Sistem Presensi Berbasis QR Code Menggunakan Framework Codeigniter (Studi Kasus Kehadiran Asisten Praktikum)”. Jurnal INSYPRO (Information System and Processing) 4, no. 1 (May 30, 2019): 17–26. Accessed June 7, 2025. https://journal.uin-alauddin.ac.id/index.php/insypro/article/view/6987.