United States. Office of Education. (1931). Statistics of the Negro race. United States Department of the Interior, Office of Education, For sale by the Supt. of Docs., U.S. G.P.O..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Office of Education. Statistics of the Negro Race. [Washington, D.C.: United States Department of the Interior, Office of Education, For sale by the Supt. of Docs., U.S. G.P.O., 1931.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited States. Office of Education. Statistics of the Negro Race. United States Department of the Interior, Office of Education, For sale by the Supt. of Docs., U.S. G.P.O., 1931.
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