Lubab, Wildatul, Moch. Muwaffiqillah, and Imron Muzakki. 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.