COUNCIL REGULATION (EC) No 2371/2002 of 20 December 2002 on the conservation and sustainable exploitation of fisheries resources under the Common Fisheries Policy. Retrieved 2013-01-05.
What are “Renewable Resources”?, by A. John Armstrong, Esq. & Dr. Jan Hamrin, Chapter 1, The Renewable Energy Policy Manual, Organization of American States, undated. Retrieved 2013-01-05.