Forouzan, Behrouz A. <br/><br/>
Data Communications and Networking 

 - 3rd   
 - New Delhi  Tata Mcgraw- Hill Publishing  2004 
 - 973p. 
<br/><br/><label>ISBN: </label>9780070584082 
<br/><br/><label>Dewey Class. No.: </label>004.6