Não informado. (1980). Behavior research of severe developmental disabilities. North Holland Publishing.
Chicago-Zitierstil (17. Ausg.)Não informado. Behavior Research of Severe Developmental Disabilities. Amsterdam: North Holland Publishing, 1980.
MLA-Zitierstil (8. Ausg.)Não informado. Behavior Research of Severe Developmental Disabilities. North Holland Publishing, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.