APA (7th ed.) Zitazioa
Spencer, M. H. (1986). Contemporary microeconomics (6th ed.). Worth.
Chicago Style (17th ed.) Zitazioa
Spencer, Milton H. Contemporary Microeconomics. 6th ed. New York: Worth, 1986.
MLA (9th ed.) Zitazioa
Spencer, Milton H. Contemporary Microeconomics. 6th ed. Worth, 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.