HIDAYATULLOH, Muhammad Alfinda; FAHRIANI, Nuniek; NOVIANTI, Triuli; ROSADI, Aswin; HARYANTI, Tining. Sistem Kehadiran Perkuliahan Mahasiswa Dengan QR Code Berbasis Android (Studi Kasus: Fakultas Teknik Universitas Muhammadiyah Surabaya). Computing Insight : Journal of Computer Science, [S. l.], v. 3, n. 1, 2021. DOI: 10.30651/ci:jcs.v3i1.7394. Disponível em: https://journal.um-surabaya.ac.id/CI/article/view/7394. Acesso em: 5 des. 2025.