Organizace spojených národů. Department of International Economic and Social Affairs. World urbanization prospects 1990: estimates and projections of urban and rural populations and of urban agglomerations. New York: United Nations, 1991. viii, 223 s.
United Nations. (1991). World urbanization prospects 1990: Estimates and projections of urban and rural populations and of urban agglomerations. New York: United Nations.
Styl ChicagoUnited Nations. World Urbanization Prospects 1990: Estimates and Projections of Urban and Rural Populations and of Urban Agglomerations. New York: United Nations, 1991.
Citace podle MLAUnited Nations. World Urbanization Prospects 1990: Estimates and Projections of Urban and Rural Populations and of Urban Agglomerations. New York: United Nations, 1991.
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