RANCANG BANGUN SISTEM ABSENSI DAN NOTIFIKASI MENGGUNAKAN RFID DAN WHATSAPP BLAST DI SMKN 1 KOTA SERANG. Journal of Innovation And Future Technology (IFTECH), [S. l.], v. 3, n. 1, p. 31–39, 2021. DOI: 10.47080/iftech.v3i1.1145. Disponível em: https://ejournal.lppm-unbaja.ac.id/index.php/iftech/article/view/1145. Acesso em: 23 aug. 2025.