National Sample Survey: Report no. 563. Sixty eighth round (July 2011-June 2012). Employment and unemployment situation among social groups in India 

 - New Delhi  NSSO  2015 
 - var.pgn 
 - NSS Report no: 563 .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>339.4954/NSS.563