United Nations Environment Programme & United Nations Centre for Human Settlements. (1987). Environmental guidelines for settlements planning and management. United Nations Environment Programme. United Nations Centre for Human Settlements (Habitat).
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিUnited Nations Environment Programme এবং United Nations Centre for Human Settlements. Environmental Guidelines for Settlements Planning and Management. Nairobi, Kenya: United Nations Environment Programme. United Nations Centre for Human Settlements (Habitat), 1987.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিUnited Nations Environment Programme এবং United Nations Centre for Human Settlements. Environmental Guidelines for Settlements Planning and Management. United Nations Environment Programme. United Nations Centre for Human Settlements (Habitat), 1987.