Department for economic and social information and policy analysis. (1993). Demographic yearbook: Population ageing and the situation of elderly persons. Nations Unies.
Цитирование в стиле Чикаго (17-е изд.)Department for economic and social information and policy analysis. Demographic Yearbook: Population Ageing and the Situation of Elderly Persons. New York: Nations Unies, 1993.
Цитирование MLA (8-е изд.)Department for economic and social information and policy analysis. Demographic Yearbook: Population Ageing and the Situation of Elderly Persons. Nations Unies, 1993.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.