Babbie Earl R. <br/><br/>
The Practice Of Social Research / Earl Babbie. 

 - 5th ed. 
 -  Belmont Calif. : Wadsworth Pub. Co. C1989. 
 - XXVII 501 [143] P. : ILL. 25 CM. 
 -  0 .
<br/><br/><br/>ENG 
<br/><br/><label>ISBN: </label>053409726X (Hbk)