RIETH, Herbert; EVERTSON, Carolyn. Variables Related to the Effective Instruction Of Difficult-to-Teach Children. Focus on Exceptional Children, [S. l.], v. 20, n. 5, 1988. DOI: 10.17161/foec.v20i5.7503. Disponível em: https://journals.ku.edu/focusXchild/article/view/7503.. Acesso em: 6 may. 2024.