Babbie, Earl <br/><br/>
The Practice of Social Research 

 - 4th Ed.; 
 - California:  Wadsworth,  1983. 
 - xxii,577p.;  23 cm. 
<br/><br/><label>ISBN: </label>0-534-05658-x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research Methodology
<br/><br/><label>Dewey Class. No.: </label>300.72  / BAB