APA (7th ed.) Citation

Haig. E-mail essentials: How to make the most of e-communication.

Chicago Style (17th ed.) Citation

Haig. E-mail Essentials: How to Make the Most of E-communication.

MLA (9th ed.) Citation

Haig. E-mail Essentials: How to Make the Most of E-communication.

Warning: These citations may not always be 100% accurate.