ebrary, Inc. (2005). How much is an ecosystem worth?: Assessing the economic value of conservation. IUCN, the Nature Conservancy, the World Bank.
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Chicago Style (17th ed.) Citation
ebrary, Inc. How Much Is an Ecosystem Worth?: Assessing the Economic Value of Conservation. Washington, DC: IUCN, the Nature Conservancy, the World Bank, 2005.
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MLA引文
ebrary, Inc. How Much Is an Ecosystem Worth?: Assessing the Economic Value of Conservation. IUCN, the Nature Conservancy, the World Bank, 2005.
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警告：這些引文格式不一定是100％准確.