Não informado. (2000). Bulletin. U.S. Department of Agriculture.
Chicagoスタイル(17版)引用形式Não informado. Bulletin. Washington: U.S. Department of Agriculture, 2000.
MLA(8版)引用形式Não informado. Bulletin. U.S. Department of Agriculture, 2000.
警告: この引用は必ずしも正確ではありません.