Não informado. (2013). Journal of the Air & Waste Management Association. Air & Waste Management Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of the Air & Waste Management Association. Pittsburgh, Pa: Air & Waste Management Association, 2013.
Lua MLA (8ú heag.)Não informado. Journal of the Air & Waste Management Association. Air & Waste Management Association, 2013.
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