Samuelson, P. A., & Samuelson, W. (1980). Economics (11th ed.). McGraw-Hill.
芝加哥风格引文Samuelson, Paul Anthony, 与 William Samuelson. Economics. 11th ed. New York: McGraw-Hill, 1980.
MLA引文Samuelson, Paul Anthony, 与 William Samuelson. Economics. 11th ed. McGraw-Hill, 1980.
警告:这些引文格式不一定是100%准确.