United Nations Centre for Human Settlements & United Nations Environment Programme. (1997). Environmental planning and management (EPM) source book. United Nations Centre for Human Settlements : United Nations Environment Programme.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)United Nations Centre for Human Settlements ба United Nations Environment Programme. Environmental Planning and Management (EPM) Source Book. Nairobi, Kenya: United Nations Centre for Human Settlements : United Nations Environment Programme, 1997.
MLA -ийн эшлэл (9 дэх хэвлэлт)United Nations Centre for Human Settlements ба United Nations Environment Programme. Environmental Planning and Management (EPM) Source Book. United Nations Centre for Human Settlements : United Nations Environment Programme, 1997.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.