Babbie, Earl R. <br/><br/>
The practice of social research / 
Earl Babbie. 
 - 13th edition. 
 - [Belmont, Calif.?] :  Wadsworth/Cengage Learning,  2013. 
 - xxiii, 584 p. :  ill. ;  24 cm. 
<br/><br/> "International edition"--Cover and t.p. verso.  Previous ed.: 2010. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781133050094 (pbk.) 1133050093 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research.<br/>Social sciences--Research--Methodology.
<br/><br/><label>Dewey Class. No.: </label>300.72