Larson, Ron <br/><br/>
Trigonometry / 
Ron Larson. 
 - Singapore :  Cengage Learning Asia,  2012. 
 - 244 p.:   ill.  26 cm. 
<br/><br/><br/>in English 
<br/><br/><label>ISBN: </label>13: 978-981-4416-09-2 
<br/><br/><label>LC Class. No.: </label>516.24 L32t c2012