Susanto , R. and Pramadjaya, A. (2025) “RANCANG BANGUN SISTEM ABSENSI QR CODE REAL-TIME DENGAN METODE WATERFALL. (STUDI KASUS : PONDOK PESANTREN MADINAH AL HIJRAH) ”, Global Research and Innovation Journal, 1(3), pp. 558–569. Available at: https://journaledutech.com/index.php/great/article/view/588 (Accessed: 11 February 2026).