Não informado. (1956). Social Work. National Association of Social Workers.
Chicagoスタイル(17版)引用形式Não informado. Social Work. Silver Spring, Md: National Association of Social Workers, 1956.
MLA(8版)引用形式Não informado. Social Work. National Association of Social Workers, 1956.
警告: この引用は必ずしも正確ではありません.