United Nations Department of Economic and Social Affairs. (1998). Demographic Yearbook 1997. United Nations.
Цитирование в стиле Чикаго (17-е изд.)United Nations Department of Economic and Social Affairs. Demographic Yearbook 1997. New York: United Nations, 1998.
Цитирование MLA (8-е изд.)United Nations Department of Economic and Social Affairs. Demographic Yearbook 1997. United Nations, 1998.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.