Abdul Munir. “KEMAMPUAN BERBICARA SISWA TUNAGRAHITA DI SDLB PK & PLK”. Jurnal Riset Guru Indonesia 2, no. 1 (Februari 22, 2023): 27–32. Diakses Desember 28, 2024. https://journal.almeeraeducation.id/jrgi/article/view/196.