1. California’s new goal: 75% recycling;CalRecycle:Sacramento, CA, 2012; http://www.calrecycle.ca.gov/75percent/Plan.pdf
2. 75% Recycling goal report to legislature;Florida Department of Environmental Protection:Tallahassee, FL, 2010; http://www.dep.state.fl.us/waste/quick_topics/publications/shw/recycling/75percent/75_recycling_report.pdf.
3. San Francisco Environment—Zero Waste Website;http://www.sfenvironment.org/zero-waste.
4. City of Oakland—Oakland Recycles Website;http://www2.oaklandnet.com/Government/o/PWA/o/FE/s/GAR/OAK024364.
5. Seattle.gov—Zero Waste Strategy Website;http://www.seattle.gov/council/issues/zerowaste.htm.