Não informado. (2000). Report of the Secretary of Agriculture. U.S. Department of Agriculture.
Citação do estilo Chicago (17ª ed.)Não informado. Report of the Secretary of Agriculture. Washington: U.S. Department of Agriculture, 2000.
Citação MLA (8ª ed.)Não informado. Report of the Secretary of Agriculture. U.S. Department of Agriculture, 2000.
警告：这些引文格式不一定是100％准确.