Ravitch, Sharon M. <br/><br/>
Reason & rigor :  how conceptual frameworks guide research / 
Sharon M. Ravitch, Matthew Riggan 
 - 2nd ed. 
 - Los Angeles :  SAGE,  2017 
 - xxiv, 234 p. ;  23 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781483340401 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research--Methodology<br/>Research--Methodology<br/>Qualitative research