Não informado. (1999). Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme.
Style de citation Chicago (17e éd.)Não informado. Environment and Urbanization. London: International Institute for Environment and Development, Human Settlements Programme, 1999.
Style de citation MLA (8e éd.)Não informado. Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme, 1999.
Attention : ces citations peuvent ne pas être correctes à 100%.