APA
Wilker L. (. a., . (1983). Dvelopment Disabilities : no longer a private tragedy. National Association of social workers, Maryland: .
Chicago
Wilker Lynn (et al), . 1983. Dvelopment Disabilities : no longer a private tragedy. National Association of social workers, Maryland: .
Harvard
Wilker L. (. a., . (1983). Dvelopment Disabilities : no longer a private tragedy. National Association of social workers, Maryland: .
MLA
Wilker Lynn (et al), . Dvelopment Disabilities : no longer a private tragedy. National Association of social workers, Maryland: . 1983.