APA (7th ed.) Zitazioa
Spencer, M. H. (1977). Contemporary macroeconomics (3rd ed.). Worth Publishing.
Chicago Style (17th ed.) Zitazioa
Spencer, Milton H. Contemporary Macroeconomics. 3rd ed. New York: Worth Publishing, 1977.
MLA (9th ed.) Zitazioa
Spencer, Milton H. Contemporary Macroeconomics. 3rd ed. Worth Publishing, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.