(1999). Urban Future: Preparatory expertises (Overviews) for the World Report on Urban Future for the Global Conference on the Urban Future URBAN 21.
Chicago-viite (17. p.)Urban Future: Preparatory Expertises (Overviews) for the World Report on Urban Future for the Global Conference on the Urban Future URBAN 21. Bonn, 1999.
MLA-viite (8. p.)Urban Future: Preparatory Expertises (Overviews) for the World Report on Urban Future for the Global Conference on the Urban Future URBAN 21. 1999.
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