APA (7th ed.) Citation

United States. Bureau of the Census. (1943). Sixteenth census of the United States: 1940, Population, Comparative occupation statistics for the United States. 1870-1940, a comparison of the 1930 and the 1940 census occupation and industry classifications and statistics, a comparable series of occupation statistics. 1870-1930; and a social-economic grouping of the labor force, 1910 to 1940. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of the Census. Sixteenth Census of the United States: 1940, Population, Comparative Occupation Statistics for the United States. 1870-1940, a Comparison of the 1930 and the 1940 Census Occupation and Industry Classifications and Statistics, a Comparable Series of Occupation Statistics. 1870-1930; and a Social-economic Grouping of the Labor Force, 1910 to 1940. [Washington]: [s.n.], 1943.

MLA (9th ed.) Citation

United States. Bureau of the Census. Sixteenth Census of the United States: 1940, Population, Comparative Occupation Statistics for the United States. 1870-1940, a Comparison of the 1930 and the 1940 Census Occupation and Industry Classifications and Statistics, a Comparable Series of Occupation Statistics. 1870-1930; and a Social-economic Grouping of the Labor Force, 1910 to 1940. [s.n.], 1943.