Samuelson, P. A., & Nordhaus, W. D. (1989). Macroeconomics: A version of economics (13th ed.). McGraw-Hill.
芝加哥风格引文Samuelson, Paul A., 与 William D. Nordhaus. Macroeconomics: A Version of Economics. 13th ed. New York: McGraw-Hill, 1989.
MLA引文Samuelson, Paul A., 与 William D. Nordhaus. Macroeconomics: A Version of Economics. 13th ed. McGraw-Hill, 1989.
警告：这些引文格式不一定是100％准确.