APA aipamena

Samuelson,Paul A, & Nordhaus, W. D. (2020). Economics (20th Edition.). Tata McGraw Hill.

Chicago Style aipamena

Samuelson,Paul A, and William D. Nordhaus. Economics. 20th Edition. Chennai: Tata McGraw Hill, 2020.

MLA aipamena

Samuelson,Paul A, and William D. Nordhaus. Economics. 20th Edition. Tata McGraw Hill, 2020.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.