1. Bureau of Economic Analysis (BEA). Regional Economic Accounts, United States Department of Commerce. 〈www.bea.gov/regional/index.htm〉.
2. Amounts and distribution of recreational beach expenditures in southern California;Dwight;Ocean Coast. Manag.,2012
3. State of the U.S. Ocean and Coastal Economies 2014;Kildow,2014
4. State of the U.S. Ocean and Coastal Economies;Kildow,2016
5. California’s Ocean Economy;Kildow,2005