Não informado. (1919). Hospital social service. Hospital Social Service Association of New York City.
Lua i Stíl Chicago (17ú heag.)Não informado. Hospital Social Service. New York: Hospital Social Service Association of New York City, 1919.
Lua MLA (8ú heag.)Não informado. Hospital Social Service. Hospital Social Service Association of New York City, 1919.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.