APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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