Citazione APA

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..

Stile di citazione Chicago

United 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.

Citazione MLA

United 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.