APA
"United Nations E. C. f. E., "United Nations E. C. f. E., . (2003). Population ageing and socio-economic status of old. New: York U N.
Chicago
"United Nations Economic Commission for Europe", "United Nations Economic Commission for Europe", . 2003. Population ageing and socio-economic status of old. New: York U N.
Harvard
"United Nations E. C. f. E., "United Nations E. C. f. E., . (2003). Population ageing and socio-economic status of old. New: York U N.
MLA
"United Nations Economic Commission for Europe", "United Nations Economic Commission for Europe", . Population ageing and socio-economic status of old. New: York U N. 2003.
