Uhlig, R. H. (1965). Planning in the urban environment: Next steps in social research and social planning, City of Philadelphia. Philadelphia, PA: City of Philadelphia. Community Renewal Program.
Παραπομπή Chicago StyleUhlig, Richard H. Planning in the Urban Environment: Next Steps in Social Research and Social Planning, City of Philadelphia. Philadelphia, PA: City of Philadelphia. Community Renewal Program, 1965.
Παραπομπή MLAUhlig, Richard H. Planning in the Urban Environment: Next Steps in Social Research and Social Planning, City of Philadelphia. Philadelphia, PA: City of Philadelphia. Community Renewal Program, 1965.
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