Munem, Mustafa A. <br/><br/>
Precalculus :  functions and graphs / 

 - 4th ed. 
 - New York  Worth Publishers,  1985. 
 - xi, 557 p. :  ill. (col.) ;  25 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>
<br/><br/><label>LC Class. No.: </label>QA303  / .M881 1985