Não informado. (1999). Topics in early childhood special education. Pro-Ed.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Topics in Early Childhood Special Education. Austin, Tex: Pro-Ed, 1999.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Topics in Early Childhood Special Education. Pro-Ed, 1999.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.