APA (7th ed.) Zitazioa
POWELL, M. DATA NOTE-15. ALCOHOL AND TOBACCO TAX IN THE EUROPEAN COMMUNITY.
Chicago Style (17th ed.) Zitazioa
POWELL, M. DATA NOTE-15. ALCOHOL AND TOBACCO TAX IN THE EUROPEAN COMMUNITY.
MLA (9th ed.) Zitazioa
POWELL, M. DATA NOTE-15. ALCOHOL AND TOBACCO TAX IN THE EUROPEAN COMMUNITY.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.