Dokumentuaren aipamena

APA (7th ed.) Zitazioa
(2003). OECD statistics on international trade in services. OECD.
Chicago Style (17th ed.) Zitazioa
OECD Statistics on International Trade in Services. Paris Cedex, France: OECD, 2003.
MLA (9th ed.) Zitazioa
OECD Statistics on International Trade in Services. OECD, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.