APA (7th ed.) Zitazioa
(2001). Extended producer responsibility: A guidance manual for governments. OECD Publications Services.
Chicago Style (17th ed.) Zitazioa
Extended Producer Responsibility: A Guidance Manual for Governments. Paris, France: OECD Publications Services, 2001.
MLA (9th ed.) Zitazioa
Extended Producer Responsibility: A Guidance Manual for Governments. OECD Publications Services, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.