Stallings.William <br/><br/>
Data and computer communications (9th ed) 
William Stallings 
 - 9th ed 
 - New Delhi:  Pearson,  2014 
 - 863 p. :  ill. ;  26 cm.  
<br/><br/>Include bibliographical references and index.  
<br/><br/><label>ISBN: </label>9789332518865 
<br/><br/><label>LC Class. No.: </label>TK5105   / .S73 2014