World Tourism Organization & United Nations Environment Programme. (2012). Tourism in the Greek economy: Background report. World Tourism Organization.
Chicago Style (17th ed.) CitationWorld Tourism Organization and United Nations Environment Programme. Tourism in the Greek Economy: Background Report. Madrid: World Tourism Organization, 2012.
MLA (9th ed.) CitationWorld Tourism Organization and United Nations Environment Programme. Tourism in the Greek Economy: Background Report. World Tourism Organization, 2012.
Warning: These citations may not always be 100% accurate.