Lial, Margaret L. <br/><br/>
Trigonometry / 
Margaret L. Lial. 
 - 8th 
 - Boston :  Addison Wesley,  2009. 
 - ix, 465 pages 22.7cm 
<br/><br/> Includes bibliographic references and index 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>978-981-0697-32-7 
<br/><br/><label>LC Class. No.: </label>516.24 L61t