Não informado. (1919). Hospital social service. Hospital Social Service Association of New York City.
Cita Chicago Style (17a ed.)Não informado. Hospital Social Service. New York: Hospital Social Service Association of New York City, 1919.
Cita MLA (8a ed.)Não informado. Hospital Social Service. Hospital Social Service Association of New York City, 1919.
Precaución: Estas citas no son 100% exactas.