Παραπομπή APA

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

Παραπομπή Chicago Style

Samuelson, Paul A., και William D. Nordhaus. Economics. 17th ed. New Delhi: Tata McGraw-Hill, 2001.

Παραπομπή MLA

Samuelson, Paul A., και William D. Nordhaus. Economics. 17th ed. Tata McGraw-Hill, 2001.