APA

United States, . (1965). County business patterns. Washington, D.C: U.S. Census Bureau.

Chicago

United States, . 1965. County business patterns. Washington, D.C: U.S. Census Bureau.

Harvard

United States, . (1965). County business patterns. Washington, D.C: U.S. Census Bureau.

MLA

United States, . County business patterns. Washington, D.C: U.S. Census Bureau. 1965.