Não informado. (2001). Bibliography of Agriculture. U.S. Department of Agriculture.
Chicagoスタイル(17版)引用形式Não informado. Bibliography of Agriculture. Washington: U.S. Department of Agriculture, 2001.
MLA(8版)引用形式Não informado. Bibliography of Agriculture. U.S. Department of Agriculture, 2001.
警告: この引用は必ずしも正確ではありません.