United States. Bureau of the Census. (1942). Sixteenth census of the United States: 1940, Population: volume 1, Number of inhabitants, total population for States, counties, and minor civil divisions, for urban and rural areas, for incorporated places, for metropolitan districts and for census tracts, comprising 1st series of population bulletins for the States, Territories, and possessions. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of the Census. Sixteenth Census of the United States: 1940, Population: Volume 1, Number of Inhabitants, Total Population for States, Counties, and Minor Civil Divisions, for Urban and Rural Areas, for Incorporated Places, for Metropolitan Districts and for Census Tracts, Comprising 1st Series of Population Bulletins for the States, Territories, and Possessions. [Washington]: [s.n.], 1942.
MLA (9th ed.) CitationUnited States. Bureau of the Census. Sixteenth Census of the United States: 1940, Population: Volume 1, Number of Inhabitants, Total Population for States, Counties, and Minor Civil Divisions, for Urban and Rural Areas, for Incorporated Places, for Metropolitan Districts and for Census Tracts, Comprising 1st Series of Population Bulletins for the States, Territories, and Possessions. [s.n.], 1942.