Barker, Vernon C. <br/><br/>
Essential mathematics with applications / 
Vernon C. Barker, Richard Aufmann, Joanne Lockwood. 
 - 7th ed. 
 - Boston, MA :  Houghton Mifflin Co.,  2005. 
 - p. cm. 
<br/><br/><label>ISBN: </label>0618503064 
<br/><br/><label>LCCN: </label>2004-113919