Não informado. (1970). Social policy. Social Policy Corporation.
Lua i Stíl Chicago (17ú heag.)Não informado. Social Policy. New York: Social Policy Corporation, 1970.
Lua MLA (8ú heag.)Não informado. Social Policy. Social Policy Corporation, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.