Where can I find more information?
Campbell, Neil A.. Biology: Concepts and Connections. 5th ed. San Francisco, CA: Pearson Education, Inc., 2005. Print.
"Disorders & Diseases of the Excretory System." LIVESTRONG.COM. Web. 09 May 2012. <http://www.livestrong.com/article/192588-disorders-diseases-of-the-excretory-system/>.
Evans, Keith. "How Does the Excretory System Work With Other Systems in the Body?" EHow. Demand Media, 26 July 2010. Web. 07 May 2012. <http://www.ehow.com/facts_6780201_excretory-work-other-systems-body_.html>.
"Excretory System." ScienceDaily. ScienceDaily. Web. 30 Apr. 2012. <http://www.sciencedaily.com/articles/e/excretory_system.htm>.
Writer, Contributing.
"Main Function of the Excretory System." EHow. Demand Media, 06 July 2009. Web. 30 Apr. 2012. <http://www.ehow.com/about_5158376_main-function-excretory-system.html>.
"National Kidney and Urologic DiseasesInformation Clearinghouse (NKUDIC)." The Kidneys and How They Work Page. Web. 08 May 2012. <http://kidney.niddk.nih.gov/kudiseases/pubs/yourkidneys/>.
Roberts, Alice M.. The complete human body: the definitive visual guide. New York, N.Y.: DK Pub., 2010. Print.
Staff, Mayo Clinic. "Definition." Mayo Clinic. Mayo Foundation for Medical Education and Research, 17 Mar. 2012. Web. 09 May 2012. <http://www.mayoclinic.com/health/kidney-stones/DS00282/DSECTION=symptoms>.
"Disorders & Diseases of the Excretory System." LIVESTRONG.COM. Web. 09 May 2012. <http://www.livestrong.com/article/192588-disorders-diseases-of-the-excretory-system/>.
Evans, Keith. "How Does the Excretory System Work With Other Systems in the Body?" EHow. Demand Media, 26 July 2010. Web. 07 May 2012. <http://www.ehow.com/facts_6780201_excretory-work-other-systems-body_.html>.
"Excretory System." ScienceDaily. ScienceDaily. Web. 30 Apr. 2012. <http://www.sciencedaily.com/articles/e/excretory_system.htm>.
Writer, Contributing.
"Main Function of the Excretory System." EHow. Demand Media, 06 July 2009. Web. 30 Apr. 2012. <http://www.ehow.com/about_5158376_main-function-excretory-system.html>.
"National Kidney and Urologic DiseasesInformation Clearinghouse (NKUDIC)." The Kidneys and How They Work Page. Web. 08 May 2012. <http://kidney.niddk.nih.gov/kudiseases/pubs/yourkidneys/>.
Roberts, Alice M.. The complete human body: the definitive visual guide. New York, N.Y.: DK Pub., 2010. Print.
Staff, Mayo Clinic. "Definition." Mayo Clinic. Mayo Foundation for Medical Education and Research, 17 Mar. 2012. Web. 09 May 2012. <http://www.mayoclinic.com/health/kidney-stones/DS00282/DSECTION=symptoms>.