United Nations Environment Programme & South Asia Co-operative Environment Programme. (2001). Vietnam: State of the environment, 2001. United Nations Environment Programme : Distributed by United Nations Environment Programme, Regional Resource Centre for Asia and the Pacific.
Cita Chicago Style (17a ed.)United Nations Environment Programme y South Asia Co-operative Environment Programme. Vietnam: State of the Environment, 2001. Pathumthani, Thailand: United Nations Environment Programme : Distributed by United Nations Environment Programme, Regional Resource Centre for Asia and the Pacific, 2001.
Cita MLA (8a ed.)United Nations Environment Programme y South Asia Co-operative Environment Programme. Vietnam: State of the Environment, 2001. United Nations Environment Programme : Distributed by United Nations Environment Programme, Regional Resource Centre for Asia and the Pacific, 2001.