Burns, Robert B. <br/><br/>
Introduction to research methods. 

 - 4th ed. 
 - London :  Sage,  c2000. 
 - ix, 613 p. :  ill. ; 25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0761965939 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research.