DESCRIPTION OF THE EFFORTS OF PARENTS WITH DOWN SYNDROME CHILDREN ON DEVELOPMENT OF FIRST LANGUAGE ACQUISITION: -. JURNAL KESEHATAN MERCUSUAR, [S. l.], v. 2, n. 2, 2019. DOI: 10.36984/jkm.v2i2.49. Disponível em: https://backupjurnal.mercubaktijaya.ac.id/mercusuar/article/view/49. Acesso em: 23 jun. 2026.