Babbie, Earl <br/><br/>
The practice of social research 

 - 4th ed. 
 - Belmont, Calif. :  Wadsworth,  1986 
 - 577 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIAL SCIENCES--RESEARCH
<br/><br/><label>LC Class. No.: </label>H62  / B322P 1986