Unless otherwise indicated, this data is taken from The League of Women Voters. The Garbage Primer. New York: Lyons & Burford. 1993: 35–72. ISBN 1-55821-250-7., which attributes, "Garbage Solutions: A Public Officials Guide to Recycling and Alternative Solid Waste Management Technologies, as cited in Energy Savings from Recycling, January/February 1989; and Worldwatch 76 Mining Urban Wastes: The Potential for Recycling, April 1987."
Moore, C. J. Synthetic polymers in the marine environment: A rapidly increasing, long-term threat. Environmental Research. 2008, 108 (2): 131–139. PMID 18949831. doi:10.1016/j.envres.2008.07.025.
Moore, C. J. Synthetic polymers in the marine environment: A rapidly increasing, long-term threat. Environmental Research. 2008, 108 (2): 131–139. PMID 18949831. doi:10.1016/j.envres.2008.07.025.
Pimenteira, C.A.P., Pereira, A.S.; Oliveira, L.B.; Rosa, L.P.; Reis, M.M.;Henriques, R.M. Energy Conservation and CO2 Emission Reductions due to Recycling in Brazil;Waste Manage.2004,24,889-897.[1] (页面存档备份,存于互联网档案馆)
Tierney, John. Recycling Is Garbage. New York: New York Times. June 30, 1996: 3 [February 28, 2008]. (原始内容存档于2008年12月6日).
Pimenteira, C.A.P., Pereira, A.S.; Oliveira, L.B.; Rosa, L.P.; Reis, M.M.;Henriques, R.M. Energy Conservation and CO2 Emission Reductions due to Recycling in Brazil;Waste Manage.2004,24,889-897.[1] (页面存档备份,存于互联网档案馆)