Cite
MLA (8th Edition)
Older Americans by Counties of the United States: 1970. U.S. Government Printing Office, 1971.
APA (7th Edition)
Older Americans by counties of the United States: 1970. (1971). U.S. Government Printing Office.
Chicago (17th Edition)
“Older Americans by Counties of the United States: 1970.” Washington: U.S. Government Printing Office, 1971.