United Nations. Department of International Economic and Social Affairs. (1990). Patterns of first marriage: Timing and prevalence. United Nations.
Цитирование в стиле Чикаго (17-е изд.)United Nations. Department of International Economic and Social Affairs. Patterns of First Marriage: Timing and Prevalence. New York: United Nations, 1990.
Цитирование MLA (9-е изд.)United Nations. Department of International Economic and Social Affairs. Patterns of First Marriage: Timing and Prevalence. United Nations, 1990.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.