(2002). Environmental Issues. Retrieved March 28, 2007, from ThinkQuest Web site: http://library.thinkquest.org/CR0215471/
(2002). Harcourt Science. Orlando, Florida: Harcourt School Publishers.
(2002 July 21). Kids Web. Retrieved March 28, 2007, from Solid Waste and Recycling Web site: http://www.metrokc.gov/dnr/kidsweb/solid_waste_main.htm
(2002, Oct 21). Recycle City. Retrieved March 28, 2007, from Recycle City Web site: http://www.epa.gov/recyclecity/
(2007 January 11). Kid's Page. Retrieved March 28, 2007, from Minnesota Pollution Control Agency Web site: http://www.pca.state.mn.us/kids/
Binns, Tristan B. (2005). Clean Planet. Chicago, IL: Heinemann Library.
Blashfield, J., & Black, W. (1991). Recycling.Chicago, IL: Childrens Press.
Environmental Kids Club. Retrieved March 28, 2007, from Environmental Protection Agency Web site: http://www.epa.gov/kids/garbage.htm
Hunter, Rebecca (2001). Pollution and Conservation. New York, NY: Raintree Steck-Vaughn.
Kalman, B., & Schaub, J. (1991). Buried in Garbage.New York, NY: Crabtree PUblishing.
Louise, Spilsbury (2006). Environment at Risk. Chicago, IL: Raintree.
Sea Pollution. Retrieved March 28, 2007, from BBS Web site: http://news.bbc.co.uk/cbbcnews/hi/static/find_out/specials/newsround_extra/2004/sea_pollution/html/default.stm
Stille, Darlene (1990). The Greenhouse Effect. Chicago, IL: Childrens Press.