Yin Robert K <br/><br/>
Case study research    Design and methods.      
Yin Robert K 
 - 2 
 - London  SAGE Publications        1994 
 - xvii,171p  cm. 
<br/><br/><label>Standard No.: </label>33126 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Sigma:f, N4