Rozak, Abdul. “Pengembangan Game Up Down Pada Materi Aljabar SMP”. Prosiding Seminar Nasional IKIP Budi Utomo 1, no. 01 (December 4, 2020): 185-203. Accessed April 25, 2024. http://ejurnal.budiutomomalang.ac.id/index.php/prosiding/article/view/1053.