Não informado. (1956). Social Work. National Association of Social Workers.
Style de citation Chicago (17e éd.)Não informado. Social Work. Silver Spring, Md: National Association of Social Workers, 1956.
Style de citation MLA (8e éd.)Não informado. Social Work. National Association of Social Workers, 1956.
Attention : ces citations peuvent ne pas être correctes à 100%.