Mertens D. <br/><br/>
Program evaluation theory and practice :  a comprehensive guide/ 
Donna M. Mertens and Amy T. Wilson 
 - 2nd 
 - New York.:  Guilford.;  2019 
 - xviii, 620p.:  ill.;  24 cm. 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>9781462532759 
<br/><br/><label>LC Class. No.: </label>DUCE H62.M2317