(1996). Awards for improving the coastal environment: The example of the blue flag. United Nations Environment Programme, World Tourism Organization, Foundation for Environmental Education in Europe.
Chicago-viite (17. p.)Awards for Improving the Coastal Environment: The Example of the Blue Flag. France; Spain; Madrid: United Nations Environment Programme, World Tourism Organization, Foundation for Environmental Education in Europe, 1996.
MLA-viite (9. p.)Awards for Improving the Coastal Environment: The Example of the Blue Flag. United Nations Environment Programme, World Tourism Organization, Foundation for Environmental Education in Europe, 1996.
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