Singleton, Royce. <br/><br/>
Approaches to social research / 
Royce A. Singleton, Jr., Bruce C. Straits. 
 - 4th ed. 
 - New York :  Oxford University Press,  2005. 
 - xviii, 622 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0195147944  
<br/><br/><label>LCCN: </label>2004043396 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research<br/>Social sciences--Methodology