Patton, Michael Quinn. <br/><br/>
Practical evaluation / 
Michael Quinn Patton. 
 - Beverly Hills :  Sage Publications,  1982. 
 - 319 p. :  ill. ;  23 cm. 
<br/><br/>Bibliography: p.308-313. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evaluation research (Social action programs).