APA (7th ed.) Zitazioa
(2000). Mobile phones: Pricing structures and trends. OECD.
Chicago Style (17th ed.) Zitazioa
Mobile Phones: Pricing Structures and Trends. Paris, Cedex, France: OECD, 2000.
MLA (9th ed.) Zitazioa
Mobile Phones: Pricing Structures and Trends. OECD, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.