Samuelson, P. A., & Robinson, R. (1961). Study guide and workbook to accompany Samuelson: Economics: By Paul A. Samuelson and Romney Robinson. 5th ed. McGraw-Hill.
Chicago Style (17. basım) AtıfSamuelson, Paul Anthony, ve Romney Robinson. Study Guide and Workbook to Accompany Samuelson: Economics: By Paul A. Samuelson and Romney Robinson. 5th Ed. New York: McGraw-Hill, 1961.
MLA (9th ed.) AtıfSamuelson, Paul Anthony, ve Romney Robinson. Study Guide and Workbook to Accompany Samuelson: Economics: By Paul A. Samuelson and Romney Robinson. 5th Ed. McGraw-Hill, 1961.
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