Babbie, Earl R. <br/><br/>
The practice of social research / 
Earl Babbie. 
 - 9th ed. 
 - Belmont, Calif. :  Wadsworth,  c2001. 
 - xxiii, 498, [118] p. ;  24 cm. 
<br/><br/><label>ISBN: </label>0534574912 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Methodology<br/>Social sciences--Research
<br/><br/><label>Dewey Class. No.: </label>300.72  / BAB