APA Citation

 Hartpence, B. (2011).  Packet guide to routing and switching.  O'Reilly.

Chicago Style Citation

 Hartpence, Brue.  Packet Guide to Routing and Switching.  O'Reilly, 2011.

MLA Citation

 Hartpence, Brue.  Packet Guide to Routing and Switching.  O'Reilly, 2011.

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