Bibliografia
Cities. Investing in energy and resource efficiency, United Nations Environment Programme, 2011.
European Green City Index. Assessing the environmental impact of Europe's major cities, Corporate Communications and Government Affairs Siemens AG. Economist Intelligence Unit, London 2010.
Herzog T., World Greenhouse Gas Emissions in 2005, WRI Working Paper, World Resources Institute, Washington 2009.
Kamal-Chaoui L., Robert A., Competitive cities and climate change, "OECD Regional Development Working Papers 2009, No. 2.
Kluczowe problemy środowiskowe, z którymi musi zmierzyć się Europa (zanieczyszczenie powietrza). "Sygnały" 2009, nr 9.
The World's Worst Polluted Places. The Top Ten of the Dirty Thirty, Blacksmith Institute, New York 2007.
World Urbanization Prospects: The 2009 Revision. Highlights, Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat, New York 2010.