Lua APA (7ú heag.)

Samuelson, P. A., & Nordhaus, W. D. (2005). Economics (18th ed.). McGraw-Hill/Irwin.

Lua i Stíl Chicago (17ú heag.)

Samuelson, Paul A., agus William D. Nordhaus. Economics. 18th ed. Boston: McGraw-Hill/Irwin, 2005.

Lua MLA (9ú heag.)

Samuelson, Paul A., agus William D. Nordhaus. Economics. 18th ed. McGraw-Hill/Irwin, 2005.

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