Lubab, W. ., Muwaffiqillah, M. ., & Muzakki, I. . (2017). Dukungan Sosial Orang Tua Pada Anak Tunagrahita Di Slb Muhammadiyah Kertosono. Happiness: Journal of Psychology and Islamic Science, 1(1), 39–47. https://doi.org/10.30762/happiness.v1i1.327