Rubin, Allen, <br/><br/>
Essential research methods for social work / 
Allen Rubin, Earl Babbie. 
 - Fourth edition. 
 - xv, 429 pages :  illustrations ;  26 cm. 
 - Empowerment series. .
 - Brooks/Cole empowerment series. .
<br/><br/>Includes bibliographical references : pages 413-418 and index. 
<br/><br/><label>ISBN: </label>9781305101685  RM764.55 1305101685 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social service--Research--Methodology.