Larson, Ron <br/><br/>
Algebra and trigonometry :  a graphing approach / 
Ron Larson. 
 - 4th ed. 
 - p.  cm. 
<br/><br/><label>ISBN: </label>0618394559 
<br/><br/><label>LCCN: </label>2003113990 
<br/><br/><label>LC Class. No.: </label>QA154.2  / .L37 2004