Ruhiawati, Irma, and Mochamad Romdoni. “RANCANG BANGUN SISTEM ABSENSI DAN NOTIFIKASI MENGGUNAKAN RFID DAN WHATSAPP BLAST DI SMKN 1 KOTA SERANG”. Journal of Innovation And Future Technology (IFTECH) 3, no. 1 (February 4, 2021): 31-39. Accessed April 20, 2025. https://ejournal.lppm-unbaja.ac.id/index.php/iftech/article/view/1145.