United nations. (2003). Enhancing agricultural productivity through on-farm water-use efficiency: An empirical case study of wheat production in Iraq. United Nations.
Цитирование в стиле Чикаго (17-е изд.)United nations. Enhancing Agricultural Productivity Through On-farm Water-use Efficiency: An Empirical Case Study of Wheat Production in Iraq. New York: United Nations, 2003.
Цитирование MLA (8-е изд.)United nations. Enhancing Agricultural Productivity Through On-farm Water-use Efficiency: An Empirical Case Study of Wheat Production in Iraq. United Nations, 2003.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.