Não informado. (1999). Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme.
Lua i Stíl Chicago (17ú heag.)Não informado. Environment and Urbanization. London: International Institute for Environment and Development, Human Settlements Programme, 1999.
Lua MLA (8ú heag.)Não informado. Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.