Simons H. <br/><br/>
Case study research in practice/ 
Helen Simons 
 - Los Angel.:  Sage.;  2009 
 - 289p.:  ill.;  23 cm. 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>9780761964247 
<br/><br/><label>LC Class. No.: </label>DUCE H62S476