Babbie, Earl, <br/><br/>
Introduction to social research / 
Earl Babbie. 
 - International edition. 
 - Australia :  Wadsworth/Cengage Learning,  2011. 
 - xx, 540 pages :   color illustrations ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780840032201 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research.