APA引文

(2008). English for emails (Kèm theo CD/ 833).

Trích dẫn kiểu Chicago

English for Emails (Kèm Theo CD/ 833). 2008.

MLA引文

English for Emails (Kèm Theo CD/ 833). 2008.

警告：这些引文格式不一定是100％准确.