Babbie, Earl R. <br/><br/>
The practice of social research / 
Earl Babbie. 
 - Belmont, California :   Wadsworth publishing co. ,   1986. 
 - xxii, 577 p. ;   30 cm. 
<br/><br/>  Includes bibliography and index. 
<br/><br/><label>ISSN: </label>053405658X 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Social sciences-- Research.