Style de citation APA (7e éd.)
ebrary, Inc. (2005). How much is an ecosystem worth?: Assessing the economic value of conservation. IUCN, the Nature Conservancy, the World Bank.
Style de citation Chicago (17e éd.)
ebrary, Inc. How Much Is an Ecosystem Worth?: Assessing the Economic Value of Conservation. Washington, DC: IUCN, the Nature Conservancy, the World Bank, 2005.
Style de citation MLA (9e éd.)
ebrary, Inc. How Much Is an Ecosystem Worth?: Assessing the Economic Value of Conservation. IUCN, the Nature Conservancy, the World Bank, 2005.
Attention : ces citations peuvent ne pas être correctes à 100%.