Não informado. (1980). Behavior research of severe developmental disabilities. North Holland Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Behavior Research of Severe Developmental Disabilities. Amsterdam: North Holland Publishing, 1980.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Behavior Research of Severe Developmental Disabilities. North Holland Publishing, 1980.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.