1940 Census Enumeration District Descriptions - Oklahoma - Oklahoma County - ED 78-19, ED 78-20

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 78-19, ED 78-20. 1850-01-01/1950-12-31. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5877946. (Accessed June 21, 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 78-19, ED 78-20. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5877946
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/5877946>.
Note: These citations are programmatically generated and may be incomplete.