APA (7th ed.) Zitazioa
(2015). Overcoming barriers to international investment in clean energy. OECD.
Chicago Style (17th ed.) Zitazioa
Overcoming Barriers to International Investment in Clean Energy. Paris, [France]: OECD, 2015.
MLA (9th ed.) Zitazioa
Overcoming Barriers to International Investment in Clean Energy. OECD, 2015.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.