Shelly, Gary B. <br/><br/>
Discovering Computers / 
Gary B. Shelly 
 - New Delhi :  Cengage Learning,  2013. 
 - 616 p. ; 
<br/><br/><label>ISBN: </label>9788131517512 
<br/><br/><label>Dewey Class. No.: </label>004  / SHE