APA (7th ed.) Citation

(1995). The challenge of urbanization: The world's large cities. United Nations.

Chicago Style (17th ed.) Citation

The Challenge of Urbanization: The World's Large Cities. New York: United Nations, 1995.

MLA (9th ed.) Citation

The Challenge of Urbanization: The World's Large Cities. United Nations, 1995.

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