Fefrian, Yandika, et al. “Penjas Adaptif Bagi Guru Sekolah Luar Biasa (SLB) Siswa Budhi Surabaya”. SPEED Journal : Journal of Special Education, vol. 3, no. 2, Feb. 2020, pp. 180-5, doi:10.31537/speed.v3i2.288.