SAMUELSON, P. A. (1973). Economics Paul A. Samuelson And William D. Nordhaus. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)SAMUELSON, Paul A. Economics Paul A. Samuelson And William D. Nordhaus. McGraw-Hill, 1973.
Lua MLA (8ú heag.)SAMUELSON, Paul A. Economics Paul A. Samuelson And William D. Nordhaus. McGraw-Hill, 1973.
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