Williams, Brian <br/><br/>
Using information technology 
Brian Williams,Stacey Sawyer. 
 - 9 th ed. 
 - New York  McGraw Hill  2011. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9780073516776 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers<br/>Information Technology<br/>Telecommuniction systems