Babbie, Earl R. <br/><br/>
The practice of social research  [Book] / 
Earl Babbie. 
 - 9th ed. 
 - Belmont, CA :  Wadsworth Thomson Learning,  c2001. 
 - 1 v. (various pagings) :  ill. ;  24 cm. 
<br/><br/> All. 
<br/><br/><label>ISBN: </label>0534574742 9780534574741 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research.<br/>Social sciences--Methodology.
<br/><br/><label>Dewey Class. No.: </label>300.72