Guba, Egon G.  <br/><br/>
Fourth generation evaluation   / 
Egon G. Guba; Yvonna S. Lincoln 
 - Newbury Park, Calif. :   Sage Publ.,  1989 
 - 294 p.  ;  23 cm. 
<br/><br/><label>ISBN: </label>0803932359 9780803932357 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evaluation-Methodology.<br/>Negotiation.
<br/><br/><label>LC Class. No.: </label>AZ191  / .G82 1989