Dyson, Peter, <br/><br/>
Understanding the Norton utilities / 
Peter Dyson. 
 - 2nd edition. 
 - Singapore :  Tech Publications,  1992. 
 - 542 pages :  illustrations ;  23 cm. 
<br/><br/><label>ISBN: </label>9813005998 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer programs.<br/>Utilities (Computer programs).