Michael Markus, Endi Permata, Desmira. Smart Attandance System Menggunakan Smart Card Berbasis Internet Of Things (IoT). SinarFe7 [Internet]. 2019Aug.16 [cited 2024May19];2(1):248-55. Available from: https://journal.fortei7.org/index.php/sinarFe7/article/view/442