Economic and social affairs. (2005). World population prespects: Sex and age distribution of the the world population. United nations.
Цитирование в стиле Чикаго (17-е изд.)Economic and social affairs. World Population Prespects: Sex and Age Distribution of the the World Population. New York: United nations, 2005.
Цитирование MLA (8-е изд.)Economic and social affairs. World Population Prespects: Sex and Age Distribution of the the World Population. United nations, 2005.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.