Babbie, Earl R. <br/><br/>
The practice of social research / 
Earl Babbie. 
 - 4th ed. 
 - Belmont, Calif. :  Wadsworth Pub. Co.,  c1986. 
 - xxii, 577 p. :  ill. ; 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>053405658X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research.<br/>Social sciences--Methodology.
<br/><br/><label>LC Class. No.: </label>H62  / .B2 1986