Krugman, Paul. On Healthcare, Tax Cuts, Social Security, the Mortgage Crisis and Alan Greenspan, Democracy Now!, 17 de Outubro de 2007, [1], em resposta a Alan Greenspan com Naomi Klein, Democracy Now!, 24 de Setembro de 2007, [2]
Krugman, Paul. On Healthcare, Tax Cuts, Social Security, the Mortgage Crisis and Alan Greenspan, Democracy Now!, 17 de Outubro de 2007, [1], em resposta a Alan Greenspan com Naomi Klein, Democracy Now!, 24 de Setembro de 2007, [2]