Kirk J <br/><br/>
Realiability and validity in qualitative research 

 -  1986 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>23766 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Sigma:f, M6