Khalida, Rahmi, and Ulfa Suryani. 2021. “Description of the Implementation of Early Intervention Program on the Acquisition of the First Language of Down Syndrome Children Through the Application of the Concept of Family Quality of Life”. Jurnal Ilmu Keperawatan Jiwa 4 (2):305-14. https://journal.ppnijatengprov.org/index.php/jikj/article/view/667.