Lial, Margaret L. <br/><br/>
Trigonometry / 
Margaret L. Lial, E. John Hornsby, Jr., David I. Schneider. 
 - 6th ed. 
 - New York :  Addison-Wesley,  c1997. 
 - 1 v. (various pagings) :  ill. (some col.) ;  24 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0673995534 
<br/><br/><label>LCCN: </label>96000656  
<br/><br/><label>LC Class. No.: </label>QA531  / .L5 1997 
<br/><br/><label>Dewey Class. No.: </label>516.24  L693