MUHAMMAD HILMIAWAN SULTHONI; VIKKY APRELIA WINDARNI; SURYA TRI ATMAJA; DEWI ANISA ISTIQOMAH; FIYAS MAHANANING PURI. Design and Implementation of a QR Code-Based Attendance Application at SMA Negeri 1 Cangkringan. Jurnal E-Komtek, v. 9, n. 1, p. 123-136, 30 Jun. 2025.