Não informado. (2002). Rural America. U.S. Department of Agriculture, Economic Research Service.
Style de citation Chicago (17e éd.)Não informado. Rural America. Washington: U.S. Department of Agriculture, Economic Research Service, 2002.
Style de citation MLA (8e éd.)Não informado. Rural America. U.S. Department of Agriculture, Economic Research Service, 2002.
Attention : ces citations peuvent ne pas être correctes à 100%.