Department for economic and social information and policy analysis. (1993). Demographic yearbook: Population ageing and the situation of elderly persons. Nations Unies.
Чикаго маягийн жагсаалтDepartment for economic and social information and policy analysis. Demographic Yearbook: Population Ageing and the Situation of Elderly Persons. New York: Nations Unies, 1993.
MLA ишлэлDepartment for economic and social information and policy analysis. Demographic Yearbook: Population Ageing and the Situation of Elderly Persons. Nations Unies, 1993.
Warning: These citations may not always be 100% accurate.