APA (7th ed.) Zitazioa
(2003). OECD environmental performance reviews: Austria. OECD.
Chicago Style (17th ed.) Zitazioa
OECD Environmental Performance Reviews: Austria. Paris, Cedex, France: OECD, 2003.
MLA (9th ed.) Zitazioa
OECD Environmental Performance Reviews: Austria. OECD, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.