Perancangan Sistem Informasi Presensi Non Pegawai Berbasis Mobile Menggunakan QR Code di PT Perkebunan Nusantara IV Medan. Jurnal Ilmiah Sains dan Teknologi, [S. l.], v. 8, n. 2, p. 209–219, 2024. DOI: 10.47080/saintek.v8i2.3134. Disponível em: https://www.ejournal.lppm-unbaja.ac.id/index.php/saintek/article/view/3134. Acesso em: 20 jun. 2025.