Não informado. (1927). Collected papers by Members of the Staff of the International Health Division of the Rockefeller Foundation. Rockefeller Foundation.
Chicago-referens (17:e uppl.)Não informado. Collected Papers by Members of the Staff of the International Health Division of the Rockefeller Foundation. New York: Rockefeller Foundation, 1927.
MLA-referens (8:e uppl.)Não informado. Collected Papers by Members of the Staff of the International Health Division of the Rockefeller Foundation. Rockefeller Foundation, 1927.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.