APA (7th ed.) Zitazioa
(2003). Safe & sustainable transport: A matter of quality assurance. OECD.
Chicago Style (17th ed.) Zitazioa
Safe & Sustainable Transport: A Matter of Quality Assurance. Paris, France: OECD, 2003.
MLA (9th ed.) Zitazioa
Safe & Sustainable Transport: A Matter of Quality Assurance. OECD, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.