Down Syndrome causes, symptoms, and most important methods of functional treatment. Journal Of Educational and Psychological Researches, [S. l.], v. 14, n. 54, p. 131–149, 2017. Disponível em: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/228. Acesso em: 11 may. 2025.