United Nations Environment Programme & UNEP. Global Environment Outlook 4: Evironment for development. GEO-4: evironment for development.
Цитирование в стиле Чикаго (17-е изд.)United Nations Environment Programme и UNEP. Global Environment Outlook 4: Evironment for Development. GEO-4: Evironment for Development. UNEP. EARTHSCAN.
Цитирование MLA (9-е изд.)United Nations Environment Programme и UNEP. Global Environment Outlook 4: Evironment for Development. GEO-4: Evironment for Development.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.