APA aipamena

Samuelson, W. (1980). Economics (11.). Mc graw Hill.

Chicago Style aipamena

Samuelson, William. Economics. 11. London: Mc graw Hill, 1980.

MLA aipamena

Samuelson, William. Economics. 11. Mc graw Hill, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.