1. The ocean economy in 2030;OECD,2016
2. Inter-Departmental Marine Coordination Group. (2012). Harnessing Our Ocean Wealth: An Integrated Marine Plan for Ireland. Marine Institute Galway.
3. Marine Scotland (2016). Scottish Marine Recreation and Tourism Survey 2015 Final Report. Marine Scotland Publication, 〈https://www2.gov.scot/Resource/0049/00497904.pdf〉.
4. European Commission, Blue Growth Opportunities for marine and maritime sustainable growth. (2012). Communication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions. Directorate-General for Maritime Affairs and Fisheries, Luxembourg, Publications Office of the European Union, COM (2012) 494 final, 2012a. Available online at: 〈https://blackseablueconomy.eu/sites/default/files/blue_growth_opportunities_for_marine_and_maritime_sustainable_growth.pdf〉.
5. The travel cost model;Parsons,2003