Norman S. Susan. (1990). We 're in Business. English for Commercial Practice and International trade: Students Book. London, Longman, 1990.
Chicagoスタイル(17版)引用形式Norman S. Susan. We 'Re in Business. English for Commercial Practice and International Trade: Students Book. London, Longman, 1990, 1990.
MLA(9版)引用形式Norman S. Susan. We 'Re in Business. English for Commercial Practice and International Trade: Students Book. London, Longman, 1990, 1990.
警告: この引用は必ずしも正確ではありません.