APA Citation

 Tomsho, G. (2011).  Guide to networking essentials.  Course Technology Cengage Learning.

Chicago Style Citation

 Tomsho, Greg.  Guide to Networking Essentials.  Course Technology Cengage Learning, 2011.

MLA Citation

 Tomsho, Greg.  Guide to Networking Essentials.  Course Technology Cengage Learning, 2011.

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