Crisnapati, Padma Nyoman, Putu Devi Novayanti, and I Putu Hendika Permana. 2020. “VCS: Visitor Counter System Berbasis Nodemcu Dan IoT”. WIDYABHAKTI Jurnal Ilmiah Populer 2 (3):21-25. https://doi.org/10.30864/widyabhakti.v2i3.193.