Sixteenth census of the United States, 1940 :
Population. Differential fertility, 1940 and 1910. Fertility by duration of marriage, based upon tabulations from the sixteenth and thirteenth censuses of the United States: 1940 and 1910.
[Prepared by Wilson H. Grabill]

APA Citation

United States. Bureau of the Census., Grabill, W. H. (1947). Sixteenth census of the United States, 1940: Population. Differential fertility, 1940 and 1910. Fertility by duration of marriage, based upon tabulations from the sixteenth and thirteenth censuses of the United States: 1940 and 1910. Washington: U.S. Govt. Print. Off..

MLA Citation

United States. Bureau of the Census, and Wilson H Grabill. Sixteenth Census of the United States, 1940: Population. Differential Fertility, 1940 And 1910. Fertility by Duration of Marriage, Based Upon Tabulations From the Sixteenth And Thirteenth Censuses of the United States: 1940 And 1910. Washington: U.S. Govt. Print. Off., 1947.