Cita APA (7a ed.)

United Nations. Department for Economic and Social Information and Policy Analysis. (1995). The challenge of urbanization: The world's large cities.

Cita Chicago Style (17a ed.)

United Nations. Department for Economic and Social Information and Policy Analysis. The Challenge of Urbanization: The World's Large Cities. USA, New York, 1995.

Cita MLA (9a ed.)

United Nations. Department for Economic and Social Information and Policy Analysis. The Challenge of Urbanization: The World's Large Cities. 1995.