Anfinson, David. <br/><br/>
IT essentials.  PC hardware and software companion guide / 
David Anfinson and Ken Quamme. 
 - 3rd ed. 
 - Indianapolis :  Cisco Press,  c2008. 
 - xxxvi, 616 p. :  ill. ;  25 cm.  
 - Cisco Networking Academy series .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781587131998 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers.<br/>Microcomputers--Equipment and supplies.