Norriss, Andrew. <br/><br/>
Ctrl-Z / 
by Andrew Norriss. 
 - 1st ed. 
 - London :  Puffin,  2009. 
 - 162 p.  20 cm. 
<br/><br/><label>ISBN: </label>9780141324296 (pbk.) 
<br/><br/><label>Subjects--Index Terms: </label>Computers	 Errors	 
<br/><br/><label>Dewey Class. No.: </label>823.914	  / NOR