APA
(2013). The status of elderly in select states of India 2011 : sample design, survey instruments, and estimates of sampling errors. United Nation Population Fund: New Delhi.
Chicago
2013. The status of elderly in select states of India 2011 : sample design, survey instruments, and estimates of sampling errors. United Nation Population Fund: New Delhi.
Harvard
(2013). The status of elderly in select states of India 2011 : sample design, survey instruments, and estimates of sampling errors. United Nation Population Fund: New Delhi.
MLA
The status of elderly in select states of India 2011 : sample design, survey instruments, and estimates of sampling errors. United Nation Population Fund: New Delhi. 2013.