JUARDI, D. Presensi dan Reminder menggunakan QR Code (Studi Kasus : SMA XXX). SYSTEMATICS, Karawang, Indonesia, v. 1, n. 1, p. 33–43, 2019. DOI: 10.35706/sys.v1i1.2011. Disponível em: https://journal.unsika.ac.id/index.php/systematics/article/view/2011. Acesso em: 20 apr. 2024.