Atmaja, purwoko mulyo, and L. A. Yaum. “PENGARUH MEDIA BANGUN RUANG TIGA DIMENSI DAN GAMBAR TIMBUL TERHADAP KEMAMPUAN KONSEP GAMBAR TIMBUL SISWA TUNANETRA KELAS 1 DI SLB-A TPA JEMBER”. SPEED Journal : Journal of Special Education, vol. 3, no. 1, July 2019, pp. 69-74, https://jurnal.unipar.ac.id/index.php/speed/article/view/206.