1. Brown LR. 2000.地球白書2000-01,ダイヤモンド社:66-98.
2. Bunn D, Mummert A, Hoshovsky M, Gilardi K. and Shanks S.2007. California Wildlife Conservation Challenge,CaliforniaDepartment of Fish and Game, http://www.dfg.ca.gov/wildlife/WAP/docs/report/full-report.pdf(参照:2012/10/01).
3. California Department of Water Resources. 1993. The 1991 Drought Water Bank, http://www.water.ca.gov/watertransfers/docs/10_1991-water_bank.pdf(参照:2012/10/01).
4. California Department of Water Resources. 2009. 2009 Drought Actions, http://www.water.ca.gov/watertransfers/docs/2009drought_actions.pdf(参照:2012/10/01).
5. California Environmental Protection Agency. 2002. Water Transfer Issues in California.http://www.waterboards.ca.gov/publications_forms/publications/general/docs/watertransfers.pdf(参照:2012/10/01).