United Nations Environment Programme. (2000). Handbook for the International Treaties for the Protection of the Ozone Layer: The Vienna Convention(1985), The Montreal Protocol(1987). UNON Printshop.
Цитирование в стиле Чикаго (17-е изд.)United Nations Environment Programme. Handbook for the International Treaties for the Protection of the Ozone Layer: The Vienna Convention(1985), The Montreal Protocol(1987). Geneva: UNON Printshop, 2000.
Цитирование MLA (8-е изд.)United Nations Environment Programme. Handbook for the International Treaties for the Protection of the Ozone Layer: The Vienna Convention(1985), The Montreal Protocol(1987). UNON Printshop, 2000.
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