Yin, Robert K. <br/><br/>
Case study research :  design and methods / 
Robert K. Yin. 
 - 5th ed. 
 - Los Angeles :  SAGE,  [2014] 
 - xxviii, 282 p. :  ill ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9781452242569 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Case method.<br/>Social sciences--Research--Methodology.