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Nordhaus, Ted og Shellenberger, Michael. ". The Green Bubble " The New Republic. 20 maí 2009 (12 ágúst 2009) http://www.tnr.com/politics/story.html?id=6cd5578a-85ab-4627-b793-680ea8d44c7f&p=1
StaffordLoan.com. " Stafford Loan Interest Rates. " (14 Ágú 2009) http://www.staffordloan.com/stafford-loan-info/interest-rates.php
Yahoo! Fjármál. " Interactive Mynd: Dow Jones Industrial Average " (14 Ágú 2009) http://finance.yahoo.com/echarts?s=%5EDJI#chart2:symbol=^dji;range=5y;indicator=v
WhiteHouse.gov. " Energy & Umhverfi. &Quot; (14 Ágú 2009) http://www.whitehouse.gov/issues/energy_and_environment/
The Next Economic Bubble: Cheat Sheet
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