Ferguson, R. F., & Dickens, W. T. (1999). Urban problems and community development. Brookings Institution Press.
Lua i Stíl Chicago (17ú heag.)Ferguson, Ronald F., agus William T. Dickens. Urban Problems and Community Development. Washington, D.C: Brookings Institution Press, 1999.
Lua MLA (9ú heag.)Ferguson, Ronald F., agus William T. Dickens. Urban Problems and Community Development. Brookings Institution Press, 1999.
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