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Ivanova, Maria (2007-11-23). "Designing the United Nations Environment Programme: a story of compromise and confrontation". International Environmental Agreements: Politics, Law and Economics (dalam bahasa Inggris). 7 (4): 356. doi:10.1007/s10784-007-9052-4. ISSN1567-9764. S2CID153356802.
Ivanova, Maria (2007-11-23). "Designing the United Nations Environment Programme: a story of compromise and confrontation". International Environmental Agreements: Politics, Law and Economics (dalam bahasa Inggris). 7 (4): 356. doi:10.1007/s10784-007-9052-4. ISSN1567-9764. S2CID153356802.