Não informado. (1999). Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Environment and Urbanization. London: International Institute for Environment and Development, Human Settlements Programme, 1999.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme, 1999.
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