IT essentials: PC hardware and software lab manual 
by Cisco Networking Academy  
 - 4th ed. 
 - USA   Cisco Press  2010 
 - 779 pages; 27 cm. 
<br/><br/><label>ISBN: </label>978-1-58713-262-9 
<br/><br/><label>Dewey Class. No.: </label>044.078/C49/2010