Não informado. (1919). Hospital social service. Hospital Social Service Association of New York City.
Chicagoスタイル(17版)引用形式Não informado. Hospital Social Service. New York: Hospital Social Service Association of New York City, 1919.
MLA(8版)引用形式Não informado. Hospital Social Service. Hospital Social Service Association of New York City, 1919.
警告: この引用は必ずしも正確ではありません.