Contemporary Society   :An Introduction to Social Science  
John A. Perry , Erna K. Perry. 
 - 12th ed. 
 - Boston:  Pearson,  2009. 
 - xiv,610 p.  ill. 
<br/><br/><label>ISBN: </label>9780205578672 
<br/><br/><label>LC Class. No.: </label>HM51  / .P47 2009