Adam, Stenly Ibrahim, Oktoverano Lengkong, and Stenly Pungus. 2021. “Pengembangan Aplikasi Mobile Presensi Mahasiswa Berbasis QR-Code Di Universitas Klabat”. CogITo Smart Journal 7 (2):349-59. https://doi.org/10.31154/cogito.v7i2.343.349-359.