Marshall, Catherine. <br/><br/>
Designing qualitative research / 
Catherine Marshall and Gretchen B. Rossman. 
 - 4th ed. 
 - London :  Sage Publications,  2006. 
 - xvii, 262 p. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references.   
<br/><br/><label>ISBN: </label>1412924898 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research--Methodology.