U. S. Bureau of the Census. (1960). The accuracy of census statistics with and withour sampling. s.n.
Chicago-viite (17. p.)U. S. Bureau of the Census. The Accuracy of Census Statistics with and Withour Sampling. Washington: s.n, 1960.
MLA-viite (9. p.)U. S. Bureau of the Census. The Accuracy of Census Statistics with and Withour Sampling. s.n, 1960.
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