Algebra :  Introductory and intermediate , An Applied Approach / 
Aufmann  Richard N. , Joanne Lockwood S. 
 - 5th ed 
 - Australia :  Brooks/Cole ,  2011. 
 - xxxi,786 p.:  ill.; 
<br/><br/><label>ISBN: </label>9781439046956 
<br/><br/><label>LC Class. No.: </label>QA152.2  / .A89  2011