APA (7th ed.) Zitazioa
(2013). Providing agri-environmental public goods through collective action. OECD.
Chicago Style (17th ed.) Zitazioa
Providing Agri-environmental Public Goods Through Collective Action. [Place of publication not identified]: OECD, 2013.
MLA (9th ed.) Zitazioa
Providing Agri-environmental Public Goods Through Collective Action. OECD, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.