http://staffnew.uny.ac.id/upload/132318126/pengabdian/11materi-sosialisasi-p2m.pdf

http://staffnew.uny.ac.id/upload/132309079/penelitian/ABK+TUK+TENDIK.pdf

http://file.upi.edu/Direktori/FPMIPA/PRODI._ILMU_KOMPUTER/196603252001121-MUNIR/Multimedia/Multimedia_Bahan_Ajar_PJJ/Pendidikan_Anak_Berkebutuhan_Khusus/Pendidikan%2BAnak%2BKebutuhan%2BKhusus%2BUNIT%2B4.pdf