Duckworth M. Michael. (1995). Grammar& Practice: Oxford Business English. Oxford, Oxford University Press, 1995.
Chicagoスタイル(17版)引用形式Duckworth M. Michael. Grammar& Practice: Oxford Business English. Oxford, Oxford University Press, 1995, 1995.
MLA(9版)引用形式Duckworth M. Michael. Grammar& Practice: Oxford Business English. Oxford, Oxford University Press, 1995, 1995.
警告: この引用は必ずしも正確ではありません.