1940 Census Enumeration District Maps - Pennsylvania - Berks County - Pike - ED 6-73

Chicago citation style
Department of Commerce. Bureau of the Census. Office of the Associate Director for Decennial Census. Geography Division. (1/1987 - 7/15/2011). 1940 Census Enumeration District Maps - Pennsylvania - Berks County - Pike - ED 6-73. 1880-01-01/1990-12-31. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5836859. (Accessed June 22, 2018.)
APA citation style
Department of Commerce. Bureau of the Census. Office of the Associate Director for Decennial Census. Geography Division. (1/1987 - 7/15/2011), (1880-01-01/1990-12-31) 1940 Census Enumeration District Maps - Pennsylvania - Berks County - Pike - ED 6-73. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5836859
MLA citation style
Department of Commerce. Bureau of the Census. Office of the Associate Director for Decennial Census. Geography Division. (1/1987 - 7/15/2011). Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/5836859>.
Note: These citations are programmatically generated and may be incomplete.