Rubin, Allen <br/><br/>
Research methods for social work/ 
Allen Rubin 
 - 6th ed. 
 - United states:  Thomson Wadsworth,  2008 
 - 264 peg:  Include index.  26cm. 
<br/><br/><label>ISBN: </label>9780495100799 049510079x 
<br/><br/><label>LC Class. No.: </label>HV11  / .R84 2008