Guba, Egon G. <br/><br/>
Fourth generation evaluation / 
Egon G. Guba, Yvonna S. Lincoln. 
 - Newbury Park, Calif. :  Sage Publications,  c1989. 
 - 294 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0803932359 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Evaluation--Methodology.<br/>Negotiation.
<br/><br/><label>Dewey Class. No.: </label>001.433  / GUB N89F