APA (7th ed.) Zitazioa

(1999). OECD historical statistics (1999 edition.). OECD.

Chicago Style (17th ed.) Zitazioa

OECD Historical Statistics. 1999 edition. Paris, Cedex, France: OECD, 1999.

MLA (9th ed.) Zitazioa

OECD Historical Statistics. 1999 edition. OECD, 1999.