APA (7th ed.) Citation

U.S. Bureau of the Census. (1951). Key to the published and tabulated data for small areas: United States censuses of population and housing, 1950. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

U.S. Bureau of the Census. Key to the Published and Tabulated Data for Small Areas: United States Censuses of Population and Housing, 1950. Washington: U.S. Govt. Print. Off, 1951.

MLA (9th ed.) Citation

U.S. Bureau of the Census. Key to the Published and Tabulated Data for Small Areas: United States Censuses of Population and Housing, 1950. U.S. Govt. Print. Off, 1951.