Não informado. (1999). Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Environment and Urbanization. London: International Institute for Environment and Development, Human Settlements Programme, 1999.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme, 1999.
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