APA (7th ed.) Zitazioa
Sloman, J. (1991). Economics (6th ed.). Prentice Hall/Financial Times.
Chicago Style (17th ed.) Zitazioa
Sloman, John. Economics. 6th ed. Harlow, England ; New York: Prentice Hall/Financial Times, 1991.
MLA (9th ed.) Zitazioa
Sloman, John. Economics. 6th ed. Prentice Hall/Financial Times, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.