(Ingelesez)Allen, Lucy; Cohen, Michael J.; Abelson, David; Miller, Bart. (2011). Gleick, Peter H. ed. «Fossil Fuels and Water Quality»The World’s Water: The Biennial Report on Freshwater Resources (Island Press/Center for Resource Economics): 73–96. doi:10.5822/978-1-59726-228-6_4. ISBN978-1-61091-048-4. (Noiz kontsultatua: 2021-03-02).
(Ingelesez)Allen, Lucy; Cohen, Michael J.; Abelson, David; Miller, Bart. (2011). Gleick, Peter H. ed. «Fossil Fuels and Water Quality»The World’s Water: The Biennial Report on Freshwater Resources (Island Press/Center for Resource Economics): 73–96. doi:10.5822/978-1-59726-228-6_4. ISBN978-1-61091-048-4. (Noiz kontsultatua: 2021-03-02).