Rotikan, Reymon, Lauri Lerry Lalogiroth, and Dwi Tania Prettysia Sinambela. 2021. “Sistem Pencatatan Kehadiran Dosen Secara Real-Time Menggunakan QR-Code Di Universitas Klabat”. CogITo Smart Journal 7 (2):278-89. https://doi.org/10.31154/cogito.v7i2.339.278-289.