Patton, Michael Quinn. <br/><br/>
Qualitative evaluation and research methods / 
Michael Quinn Patton. 
 - 2nd ed. 
 - Newbury Park, Calif. :  Sage Publications,  1990. 
 - 532p. :   ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0803937792 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Methodology.
<br/><br/><label>LC Class. No.: </label>H62  / .P38 1990