United States. Bureau of the Census. (1973). 1970 census of population. U.S. Dept. of Commerce, Social and Economic Statistics Administration, Bureau of the Census : For sale by the Supt. of Docs., U.S. G.P.O..
芝加哥风格引文United States. Bureau of the Census. 1970 Census of Population. Washington, D.C.: U.S. Dept. of Commerce, Social and Economic Statistics Administration, Bureau of the Census : For sale by the Supt. of Docs., U.S. G.P.O., 1973.
MLA引文United States. Bureau of the Census. 1970 Census of Population. U.S. Dept. of Commerce, Social and Economic Statistics Administration, Bureau of the Census : For sale by the Supt. of Docs., U.S. G.P.O., 1973.
警告：这些引文格式不一定是100％准确.