APA (7th ed.) Citation

UN. (2007). Geo year book 2007: An overview of our changing environment. UNOPS.

Chicago Style (17th ed.) Citation

UN. Geo Year Book 2007: An Overview of Our Changing Environment. UK: UNOPS, 2007.

MLA (8th ed.) Citation

UN. Geo Year Book 2007: An Overview of Our Changing Environment. UNOPS, 2007.

Warning: These citations may not always be 100% accurate.