"Pawson, Ray ; Tilley , Nick" <br/><br/>
Realistic evaluation 

 - New Delhi  Sage  2011 
 - 235p. 
<br/><br/><label>ISBN: </label>9780761950097 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evaluation research (Social action programmes)
<br/><br/><label>Dewey Class. No.: </label>001.4 PAW