Samuelson, P. A., & Nordhaus, W. D. (2005). Economics (18th ed.). McGraw-Hill/Irwin.
芝加哥风格引文Samuelson, Paul A., 与 William D. Nordhaus. Economics. 18th ed. Boston: McGraw-Hill/Irwin, 2005.
MLA引文Samuelson, Paul A., 与 William D. Nordhaus. Economics. 18th ed. McGraw-Hill/Irwin, 2005.
警告：这些引文格式不一定是100％准确.