Trattner, W. I. (1979). From poor law to welfare state: A history of social welfare in America (2nd ed.). Free Press.
Lua i Stíl Chicago (17ú heag.)Trattner, Walter I. From Poor Law to Welfare State: A History of Social Welfare in America. 2nd ed. New York: Free Press, 1979.
Lua MLA (9ú heag.)Trattner, Walter I. From Poor Law to Welfare State: A History of Social Welfare in America. 2nd ed. Free Press, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.