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

 - 2nd ed. 
 - New Delhi  Tata McGraw Hill  2003 
 - 944p. 
<br/><br/><label>ISBN: </label>00704993557 
<br/><br/><label>Dewey Class. No.: </label>004.6  F769D