United States. Public Health Service. (1937). Mortality among southern Negroes since 1920, with comparative data for southern whites and northern Negroes. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Public Health Service. Mortality Among Southern Negroes Since 1920, with Comparative Data for Southern Whites and Northern Negroes. [Washington]: [s.n.], 1937.
MLA (9th ed.) CitationUnited States. Public Health Service. Mortality Among Southern Negroes Since 1920, with Comparative Data for Southern Whites and Northern Negroes. [s.n.], 1937.
Warning: These citations may not always be 100% accurate.