Yin, Robert K. <br/><br/>
Case study research :  design and methods. 

 - Fifth edition. 
 - Los Angeles :  SAGE Publications, Inc,  c2014. 
 - xv, 282 pages. :  illustrations. ;  23 cm. 
<br/><br/> Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>9781452242569 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Case method.<br/>Social sciences--Research--Methodology.