APA-čujuhus (7. p.)
Samuelson, P. A., & Nordhaus, W. D. (1989). Economics (13th ed.). McGraw-Hill Book.
Chicago-čujuhus (17. p.)
Samuelson, Paul A., juo William D. Nordhaus. Economics. 13th ed. New York: McGraw-Hill Book, 1989.
MLA-čujuhus (9. p.)
Samuelson, Paul A., juo William D. Nordhaus. Economics. 13th ed. McGraw-Hill Book, 1989.
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