References


Fahey, David W., and Michaela I. Hegglin. "Twenty Questions and Answers about the Ozone Layer: 2010 Update." United Nations Environment Programme. UNEP, 2 July 2010. Web. 16 May 2013.
Foster, Joanna M.. "The Enduring Effects of Ozone Depletion." The New York Times. NY Times, 1 Feb 2013. Web. 16 May 2013.
Hourdequin, Marion. "Ozone Depletion." Encyclopedia of Environmental Ethics and Philosophy. Cengage Learning, 2009. Web. 16 May 2013.
"Ozone Hole Watch." NASA: Goddard Space Flight Center. NASA, 12 May 2013. Web. 16 May 2013.

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