Rubin, Allen <br/><br/>
Research methods for social work / 
Allen Rubin, Earl R. Babbie 
 - 9th ed. 
 - Boston, MA :  Cengage Learning,  2017 
 - xx, 652 p. :  ill. ;  26 cm. 
 - Empowerment series .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781305633827 (hbk.) 1305633822 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social service--Research--Methodology