United nations. (1988). Desertification control bulletin: A Bulletin of world events in the control of desertification, restoration of degraded lands and reforestation. UNEP.
Цитирование в стиле Чикаго (17-е изд.)United nations. Desertification Control Bulletin: A Bulletin of World Events in the Control of Desertification, Restoration of Degraded Lands and Reforestation. Nairobi: UNEP, 1988.
Цитирование MLA (8-е изд.)United nations. Desertification Control Bulletin: A Bulletin of World Events in the Control of Desertification, Restoration of Degraded Lands and Reforestation. UNEP, 1988.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.