APA引文

Haig. (2001). E-mail essentials: How to make the most of e-communication. Kogan Page.

芝加哥风格引文

Haig. E-mail Essentials: How to Make the Most of E-communication. London: Kogan Page, 2001.

MLA引文

Haig. E-mail Essentials: How to Make the Most of E-communication. Kogan Page, 2001.

警告：这些引文格式不一定是100％准确.