(1931). The contribution of sociology to social work. Pub. for the New York school of social work by Columbia university press.
Lua i Stíl Chicago (17ú heag.)The Contribution of Sociology to Social Work. New York: Pub. for the New York school of social work by Columbia university press, 1931.
Lua MLA (9ú heag.)The Contribution of Sociology to Social Work. Pub. for the New York school of social work by Columbia university press, 1931.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.