“Language Disorders Faced by Down Syndrome Sufferers at Slb – C Muzdalifah Medan : A Psycholinguistic Analysis”. LINGUISTICA 13, no. 4 (October 31, 2024): 192–206. Accessed March 23, 2026. https://jurnal.unimed.ac.id/2012/index.php/jalu/article/view/64933.