Rubin, Allen  <br/><br/>
Methodology for social work research 
by Allen  Rubin 
 - New Delhi   Cengage LearningLearning     2011 
 - 522 p. 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Earl  BABBIE