David A Hough. (1993). Telephone skills: Essential telephone English. Oxford: Heinemann.
シカゴスタイル引用形David A Hough. Telephone Skills: Essential Telephone English. Oxford: Heinemann, 1993.
MLA引用形式David A Hough. Telephone Skills: Essential Telephone English. Oxford: Heinemann, 1993.
警告: この引用は必ずしも正確ではありません.