Hornsby, John, <br/><br/>
A graphical approach to precalculus with limits :  a unit circle approach / 

 - 5th ed. 
 - Boston   Addison Wesley,  2011. 
 - xx, 922p. :   ill. ;  29 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9780321644732 0321644735  0321655044  
<br/><br/><label>LC Class. No.: </label>QA331.3  / .H81 2011