Harefa, A., and H. O. N. Harefa. “The Role of the Teacher in Improving the Social Interaction of Children With Special Needs at the Gunungsitoli State Special School”. Edumaspul: Jurnal Pendidikan, Vol. 6, no. 2, Oct. 2022, pp. 2242-51, doi:10.33487/edumaspul.v6i2.4613.