Chaniago, Muhammad Benny, Rizky Hardiana, Hadi Pratama Wijaya, Fazri Ramadhan, Rizki Hamzah Abdul Gani, and Nando Agung Dwi Saksono. 2022. “ Design of Portable Parking System Using Android-Based QR Code”. CENTRAL ASIA AND THE CAUCASUS 23 (1): 4798-4808. https://ca-c.org/CAC/index.php/cac/article/view/474.