محمد نوري محمود الحيالي ا. Learning Difficulties and Non-harmonious Behaviour of Special Education Students. College of Basic Education Research Journal, [S. l.], v. 3, n. 4, p. 18–38, 2007. Disponível em: https://stats.uomosul.edu.iq/index.php/berj/article/view/38601. Acesso em: 26 oct. 2025.