"Composting for Facilities." Resource Conservation. Environmental Protection Agency, 1 Nov 2013. Web. 19 Dec 2013. <http://www.epa.gov/compost/>.
United States. Environmental Protection Agency. Municipal Solid Waste Generation, Recycling, and Disposal in the United States: Facts and Figures for 2011. Washington D.C.: , 2013. Web.
"What Is Anaerobic Digestion." American Biogas Council. N.p., n.d. Web. 04 Jan. 2014.
Infographic:
http://www.treehugger.com/lawn-garden/which-composting-method-is-best-for-you-infographic-helps-you-decide.html
United States. Environmental Protection Agency. Municipal Solid Waste Generation, Recycling, and Disposal in the United States: Facts and Figures for 2011. Washington D.C.: , 2013. Web.
"What Is Anaerobic Digestion." American Biogas Council. N.p., n.d. Web. 04 Jan. 2014.
Infographic:
http://www.treehugger.com/lawn-garden/which-composting-method-is-best-for-you-infographic-helps-you-decide.html