Bashmakov, I.; et al. (2001). "6.2.2.2.1 Collection Point and Tax Base". Dalam B. Metz; et al. Policies, Measures, and Instruments. Climate Change 2001: Mitigation. Contribution of Working Group III to the Third Assessment Report of the Intergovernmental Panel on Climate Change. Print version: Cambridge University Press, Cambridge, UK, and New York, N.Y., U.S.A.. This version: GRID-Arendal website. Diarsipkan dari versi asli tanggal 2013-12-28. Diakses tanggal 2011-04-08.
Gupta, S.; et al. (2007). "13.2.1.2 Taxes and charges". Policies, instruments, and co-operative arrangements. Climate Change 2007: Mitigation. Contribution of Working Group III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (B. Metz et al. Eds.). Print version: Cambridge University Press, Cambridge, U.K., and New York, N.Y., U.S.A.. This version: IPCC website. Diarsipkan dari versi asli tanggal 2010-10-29. Diakses tanggal 2010-03-18.
Bashmakov, I.; et al. (2001). "6.2.2.2.1 Collection Point and Tax Base". Dalam B. Metz; et al. Policies, Measures, and Instruments. Climate Change 2001: Mitigation. Contribution of Working Group III to the Third Assessment Report of the Intergovernmental Panel on Climate Change. Print version: Cambridge University Press, Cambridge, UK, and New York, N.Y., U.S.A.. This version: GRID-Arendal website. Diarsipkan dari versi asli tanggal 2013-12-28. Diakses tanggal 2011-04-08.
Gupta, S.; et al. (2007). "13.2.1.2 Taxes and charges". Policies, instruments, and co-operative arrangements. Climate Change 2007: Mitigation. Contribution of Working Group III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (B. Metz et al. Eds.). Print version: Cambridge University Press, Cambridge, U.K., and New York, N.Y., U.S.A.. This version: IPCC website. Diarsipkan dari versi asli tanggal 2010-10-29. Diakses tanggal 2010-03-18.