Não informado. (2000). Environment and development. American Planning Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Environment and Development. Chicago, Ill: American Planning Association, 2000.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Environment and Development. American Planning Association, 2000.
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