Larson, Ron <br/><br/>
Precalculus :  a graphing approach / 
Ron Larson. 
 - 4th ed. 
 - 1 v. (various pagings) ;25  cm. 
<br/><br/><label>ISBN: </label>0618394664 
<br/><br/><label>LCCN: </label>2003113991 
<br/><br/><label>LC Class. No.: </label>QA331.3  / .L37 2004