APA引文

Samuelson, P. A., & Nordhaus, W. D. (2001). Economics (17th ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Samuelson, Paul Anthony, and William D. Nordhaus. Economics. 17th ed. Boston, Mass.: McGraw-Hill, 2001.

MLA引文

Samuelson, Paul Anthony, and William D. Nordhaus. Economics. 17th ed. McGraw-Hill, 2001.