Kurniawan, B., L. Fitriadi, M. Albaroky, and R. Astiani. “Radio Frequency Identification and Telegram for Student Attendance”. International Journal of Research and Applied Technology (INJURATECH), Vol. 4, no. 1, July 2024, pp. 139-44, https://ojs.unikom.ac.id/index.php/injuratech/article/view/14124.