Source:
Micevska, T., et al. "Variation in, and Causes of, Toxicity of Cigarette Butts to a Cladoceran and Microtox." Archives of Environmental Contamination and Toxicology. 50(2). Feb. 2006: 205-12. Web.
Register, Kathleen M. "Cigarette Butts as Litter—Toxic as Well as Ugly." Clean Virginia Waterways. Farmville, VA. Web.
Slaughter, Elli, et al."Toxicity of cigarette butts, and their chemical components, to marine and freshwater fish." Tobacco Control. 2011. Web.
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