Informal sector and conditions of employment in India : NSS 68th round (July 2011 - June 2012) = Bharata mem anaupacarika kshetra evam rojagara ki sthitiyam : Ra. Pra. Sarve. 68 vam daura, July 2011 - June 2012.
- New Delhi : National Sample Survey Office, National Statistical Organisation, Ministry of Statistics and Programme Implementation, Government of India, 2014.
- v. (various pagings) ;