Não informado. (1976). Health and Social Work. National Association of Social Workers.
Chicago-Zitierstil (17. Ausg.)Não informado. Health and Social Work. Washington: National Association of Social Workers, 1976.
MLA-Zitierstil (8. Ausg.)Não informado. Health and Social Work. National Association of Social Workers, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.