APA引文

Gershon, S. (2002). English upgrade. Oxford, UK: Macmillan.

Trích dẫn kiểu Chicago

Gershon, Stenven. English Upgrade. Oxford, UK: Macmillan, 2002.

MLA引文

Gershon, Stenven. English Upgrade. Oxford, UK: Macmillan, 2002.

警告：這些引文格式不一定是100％准確.