APA

United States, . (2004). U.S. Census Bureau cartographic products: product samples. Washington, D.C: U.S. Census Bureau, U.S. Dept. of Commerce, Economics, and Statistics Administration.

Chicago

United States, . 2004. U.S. Census Bureau cartographic products: product samples. Washington, D.C: U.S. Census Bureau, U.S. Dept. of Commerce, Economics, and Statistics Administration.

Harvard

United States, . (2004). U.S. Census Bureau cartographic products: product samples. Washington, D.C: U.S. Census Bureau, U.S. Dept. of Commerce, Economics, and Statistics Administration.

MLA

United States, . U.S. Census Bureau cartographic products: product samples. Washington, D.C: U.S. Census Bureau, U.S. Dept. of Commerce, Economics, and Statistics Administration. 2004.