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"The Uneven Distribution of Fresh Water." 123 Help Me! N.p., 10 Apr. 2012. Web.
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2008. Print.
"The Uneven Distribution of Fresh Water." 123 Help Me! N.p., 10 Apr. 2012. Web.
10 Apr. 2012. <http://www.123helpme!.com>.
"Waterborne Diseases." Diseases from Dirty Water. N.p., 20 May 2012. Web. 16
Apr. 2012. <http://en.wikipedia.org/wiki/Waterborne_diseases>.
"Water Distribution on Earth." Water Distribution on Earth. N.p., 13 Mar. 2012.
Web. 23 May 2012. <http://waterdistributiononearth.com>.