JulhamJ., and SitorusP. A. “Parking Cross Prototype Using RFID As a Microcontroller Based Payment Tool”. International Journal of Data Science, Computer Science and Informatics Technology (InJODACSIT), Vol. 1, no. 1, Apr. 2021, pp. 01-07, http://ojs.polmed.ac.id/index.php/InJODACSIT/article/view/415.