Krugman, P. The bad economics of fossil fuel defenders. The Philippine Star.
芝加哥风格引文Krugman, Paul. "The Bad Economics of Fossil Fuel Defenders." The Philippine Star .
MLA引文Krugman, Paul. "The Bad Economics of Fossil Fuel Defenders." The Philippine Star, .
警告：这些引文格式不一定是100％准确.