Dugopolski, Mark <br/><br/>
College algebra and trigonometry :   a unit circle approach / 
Mark Dugopolski. 
 - 5th 
 - Boston, MA :  Pearson Education,  2011. 
 - xxv, 860 : I-17 p.:  28 cm. 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>9780321644770 
<br/><br/><label>LC Class. No.: </label>512.13 D87c