Yin, Robert K. <br/><br/>
Case study research :  design and methods / 
Robert K. Yin 
 - 4th ed. 
 - Los Angeles, Calif. :  Sage Publications,  c2009 
 - xiv, 219 p. :  ill. ;  23 cm. 
 - Applied social research methods  v. 5 .
<br/><br/>Includes bibliographical references (p. 193-202) and index 
<br/><br/><label>ISBN: </label>9781412960991 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Case method<br/>Social sciences--Research--Methodology