United Nations. Department of Economic and Social Information and Policy Analysis Statistical Division. (2001). Energy statistics yearbook =: Annuaire des statistiques de l'énergie. United Nations.
Цитирование в стиле Чикаго (17-е изд.)United Nations. Department of Economic and Social Information and Policy Analysis Statistical Division. Energy Statistics Yearbook =: Annuaire Des Statistiques De L'énergie. New York: United Nations, 2001.
Цитирование MLA (9-е изд.)United Nations. Department of Economic and Social Information and Policy Analysis Statistical Division. Energy Statistics Yearbook =: Annuaire Des Statistiques De L'énergie. United Nations, 2001.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.