APA (7th ed.) Zitazioa
(2000). Research on transport economics (2000 edition.). OECD.
Chicago Style (17th ed.) Zitazioa
Research on Transport Economics. 2000 edition. Paris Cedex, France: OECD, 2000.
MLA (9th ed.) Zitazioa
Research on Transport Economics. 2000 edition. OECD, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.