Cite
MLA (8th Edition)
Percent Change In Corn Yield Per Acre: by Counties of the United States: 1939-1964. Census Bureau, For sale by the Superintendent of Document, U.S. Government Printing Office, 1970.
APA (7th Edition)
Percent change in corn yield per acre: By counties of the United States: 1939-1964. (1970). Census Bureau, For sale by the Superintendent of Document, U.S. Government Printing Office.
Chicago (17th Edition)
“Percent Change in Corn Yield per Acre : by Counties of the United States: 1939-1964.” Washington, D.C.: Census Bureau, For sale by the Superintendent of Document, U.S. Government Printing Office, 1970.