United Nations Environment Programme. (2007). Climate action 2007. UNEP Sustainable Development International.
Chicagoスタイル(17版)引用形式United Nations Environment Programme. Climate Action 2007. London, England: UNEP Sustainable Development International, 2007.
MLA(9版)引用形式United Nations Environment Programme. Climate Action 2007. UNEP Sustainable Development International, 2007.
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