Não informado. (1989). AgExporter. U.S. Department of Agriculture, Foreign Agricultural Service.
Chicagoスタイル(17版)引用形式Não informado. AgExporter. Washington: U.S. Department of Agriculture, Foreign Agricultural Service, 1989.
MLA(8版)引用形式Não informado. AgExporter. U.S. Department of Agriculture, Foreign Agricultural Service, 1989.
警告: この引用は必ずしも正確ではありません.