APA (7th ed.) Zitazioa
(2010). Guidelines for cost-effective agri-environmental policy measures. OECD.
Chicago Style (17th ed.) Zitazioa
Guidelines for Cost-effective Agri-environmental Policy Measures. [Place of publication not identified]: OECD, 2010.
MLA (9th ed.) Zitazioa
Guidelines for Cost-effective Agri-environmental Policy Measures. OECD, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.