Lua APA (7ú heag.)

Samuelson, P., & Nordhaus, W. (2015). Economics (19th ed.). McGraw Hill.

Lua i Stíl Chicago (17ú heag.)

Samuelson, Paul, agus William Nordhaus. Economics. 19th ed. INDIA: McGraw Hill, 2015.

Lua MLA (9ú heag.)

Samuelson, Paul, agus William Nordhaus. Economics. 19th ed. McGraw Hill, 2015.

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