APA (7th ed.) Zitazioa

Samuelson, P. A. (1985). Economics (12th.). McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

Samuelson, Paul A. Economics. 12th. Singapore: McGraw-Hill, 1985.

MLA (9th ed.) Zitazioa

Samuelson, Paul A. Economics. 12th. McGraw-Hill, 1985.