Samuelson, P. A. (1951). Economics, an introductory analysis (2nd ed.). McGraw-Hill.
Chicago-viite (17. p.)Samuelson, Paul Anthony. Economics, an Introductory Analysis. 2nd ed. New York: McGraw-Hill, 1951.
MLA-viite (9. p.)Samuelson, Paul Anthony. Economics, an Introductory Analysis. 2nd ed. McGraw-Hill, 1951.
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