APA (7 वां संस्करण) प्रशस्ति पत्र

Não informado. (1999). Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Não informado. Environment and Urbanization. London: International Institute for Environment and Development, Human Settlements Programme, 1999.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Não informado. Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme, 1999.

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