Straw, Allan; Keith Martin Clayton (1979). Eastern and Central England(Digitized 2007-11-30 by Google Books online). Bath, UK: Taylor & Francis. p. 110. ISBN9780416846706. Retrieved 2009-01-10.
De Angelo, Laura; Eds. Cutler J. Cleveland (August 22, 2008). "North Sea, Europe – Encyclopedia of Earth". Environmental Information Coalition, National Council for Science and the Environment. Retrieved 2008-11-02.
"LIS No. 10 – North Sea 1974"(pdf). International Boundary Study Series A Limits in the Seas North Sea Continental Shelf Boundaries. The Geographer, Bureau of Intelligence and Research of the Department of State. June 14, 1974. Retrieved 2008-12-05. To expand the Geographic Tree and see the child Geographic names look in North Atlantic Ocean, North Sea.
"VLIMAR, the VLIz MARine Gazetteer". Retrieved 2008-11-28. To expand the Geographic Tree and see the child Geographic names look in North Atlantic Ocean, North Sea.