Rubin, Allen. <br/><br/>
Research methods for social work / 
Allen Rubin, Earl R. Babbie. 
 - 7th ed. 
 - Belmont, CA :  Brooks/Cole Cengage Learning,  2011. 
 - xvii, 653 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references (p. 631-642) and index. 
<br/><br/><label>ISBN: </label>9780495811718 (hbk.)  RM527.39 0495811718 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social service--Research--Methodology.