APA (7th ed.) Zitazioa
(2017). OECD environmental performance reviews: Estonia 2017. OECD.
Chicago Style (17th ed.) Zitazioa
OECD Environmental Performance Reviews: Estonia 2017. Paris: OECD, 2017.
MLA (9th ed.) Zitazioa
OECD Environmental Performance Reviews: Estonia 2017. OECD, 2017.
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