Não informado. (1999). Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Environment and Urbanization. London: International Institute for Environment and Development, Human Settlements Programme, 1999.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Environment and Urbanization. International Institute for Environment and Development, Human Settlements Programme, 1999.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.