1. Arizona’s Recharge and Recovery Programs;Megdal,2007
2. Underground Water Banking in the Western United States;Ronstadt;Rocky Mt. Miner. Law Inst.,2012
3. Population Distribution and Change: 2000 to 2010, 2010 Census Briefs
http://www.census.gov/prod/cen2010/briefs/c2010br-01.pdf
4. Shaped by Water: An Arizona Historical Perspective;August,2007