APA引文

David A Hough. (1993). Telephone skills: Essential telephone English. Oxford: Heinemann.

Trích dẫn kiểu Chicago

David A Hough. Telephone Skills: Essential Telephone English. Oxford: Heinemann, 1993.

MLA引文

David A Hough. Telephone Skills: Essential Telephone English. Oxford: Heinemann, 1993.

警告：這些引文格式不一定是100％准確.