Larson, Ron. <br/><br/>
Trigonometry / 
Ron Larson. 
 - Philippine edition. 
 - Singapore :  Cengage Learning,  c2012. 
 - 244 pages :  Illustration ;  26 cm. 
<br/><br/><label>ISBN: </label>9789814416092 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.