United nations conference on trade and development. (1995). UNCTAD commodity yearbook. United Nations.
Цитирование в стиле Чикаго (17-е изд.)United nations conference on trade and development. UNCTAD Commodity Yearbook. Geneva: United Nations, 1995.
Цитирование MLA (8-е изд.)United nations conference on trade and development. UNCTAD Commodity Yearbook. United Nations, 1995.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.