Peterson, Larry L.; Davie, Bruce S. <br/><br/>
Computer networks : a systems approach  

 - 5th. ed. 
 - New Delhi  Elsevier  2012. 
 - xxxi; 884 p. 
<br/><br/><label>ISBN: </label>9789380501932 
<br/><br/><label>Source: </label> 830.00 PKR