Wijaya, Habibi Hadi. “EFEKTIVITAS PENGUNAAN COUNTER DOWN SEBAGAI MEDIA HITUNG SENAM BAGI PENYANDANG TUNA RUNGU SLB SANTI MULIA SURABAYA”. Jurnal Speed (Sport, Physical Education, Empowerment) 1, no. 1 (December 10, 2018): 40–44. Accessed November 19, 2024. https://journal.unsika.ac.id/speed/article/view/1435.