Gerring, John <br/><br/>
Case study research : principles and practices 
John gerring 
 - Cambridge  Cambridge University Press  2007 
 - x, 265p 
<br/><br/> Includes bibliographical references and indexes 
<br/><br/><label>ISBN: </label>9780521676564 
<br/><br/><label>ISSN: </label>2006051819 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Historical method
<br/><br/><label>Dewey Class. No.: </label>001.432 GER