Não informado. (2009). Intellectual and Developmental Disabilities. American Association on Intellectual and Developmental Disabilities.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Intellectual and Developmental Disabilities. Washington: American Association on Intellectual and Developmental Disabilities, 2009.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Intellectual and Developmental Disabilities. American Association on Intellectual and Developmental Disabilities, 2009.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.