1940 Census Enumeration District Descriptions - Oklahoma - Oklahoma County - ED 55-1, ED 55-2, ED 55-3, ED 55-4, ED 55-5, ED 55-6, ED 55-7

Chicago citation style
Department of Commerce. Bureau of the Census. Office of the Assistant Director for Operations. Geography Division. (3/13/1947 - 1968). 1940 Census Enumeration District Descriptions - Oklahoma - Oklahoma County - ED 55-1, ED 55-2, ED 55-3, ED 55-4, ED 55-5, ED 55-6, ED 55-7. 1850-01-01/1950-12-31. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5877919. (Accessed October 23, 2018.)
APA citation style
Department of Commerce. Bureau of the Census. Office of the Assistant Director for Operations. Geography Division. (3/13/1947 - 1968), (1850-01-01/1950-12-31) 1940 Census Enumeration District Descriptions - Oklahoma - Oklahoma County - ED 55-1, ED 55-2, ED 55-3, ED 55-4, ED 55-5, ED 55-6, ED 55-7. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5877919
MLA citation style
Department of Commerce. Bureau of the Census. Office of the Assistant Director for Operations. Geography Division. (3/13/1947 - 1968). Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/5877919>.
Note: These citations are programmatically generated and may be incomplete.