Susanto R, Pramadjaya A. RANCANG BANGUN SISTEM ABSENSI QR CODE REAL-TIME DENGAN METODE WATERFALL. (STUDI KASUS : PONDOK PESANTREN MADINAH AL HIJRAH) . GREAT [Internet]. 2025 Sep. 3 [cited 2026 Feb. 11];1(3):558-69. Available from: https://journaledutech.com/index.php/great/article/view/588