Não informado. (1978). Business America. U.S. Department of Commerce.
Chicagoスタイル(17版)引用形式Não informado. Business America. Washington: U.S. Department of Commerce, 1978.
MLA(8版)引用形式Não informado. Business America. U.S. Department of Commerce, 1978.
警告: この引用は必ずしも正確ではありません.