APA (7th ed.) Zitazioa
United Nations Environment Programme. (2005). Selected texts of legal instruments in international environmental law. United Nations Environment Programme.
Chicago Style (17th ed.) Zitazioa
United Nations Environment Programme. Selected Texts of Legal Instruments in International Environmental Law. Nairobi, Kenya: United Nations Environment Programme, 2005.
MLA (9th ed.) Zitazioa
United Nations Environment Programme. Selected Texts of Legal Instruments in International Environmental Law. United Nations Environment Programme, 2005.
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