Não informado. (2009). Intellectual and Developmental Disabilities. American Association on Intellectual and Developmental Disabilities.
Čikaški stil citiranja (17. izdanje)Não informado. Intellectual and Developmental Disabilities. Washington: American Association on Intellectual and Developmental Disabilities, 2009.
MLA način citiranja (8. izdanje)Não informado. Intellectual and Developmental Disabilities. American Association on Intellectual and Developmental Disabilities, 2009.
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