FADHLULLOH, K., and W. TH.D. “APLIKASI GAME PENGENALAN WISATA KOTA SEMARANG DENGAN METODE COLLISION DETECTION”. Information Technology and Telematics, Vol. 8, no. 2, May 2019, https://www.unisbank.ac.id/ojs/index.php/fti3/article/view/6547.