U. S. Bureau of the Census. (1960). The accuracy of census statistics with and withour sampling. s.n.
Chicago-referens (17:e uppl.)U. S. Bureau of the Census. The Accuracy of Census Statistics with and Withour Sampling. Washington: s.n, 1960.
MLA-referens (9:e uppl.)U. S. Bureau of the Census. The Accuracy of Census Statistics with and Withour Sampling. s.n, 1960.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.