Norton, P.  <br/><br/>
Introduction to Computers / 
Petor Norton 
 - 7th ed. 
 - New Delhi :  McGrew Hill,  2013. 
 - 622 p. 
<br/><br/><label>ISBN: </label>9780070671201 
<br/><br/><label>Dewey Class. No.: </label>004  / NOR