Citace podle APA (7th ed.)

United Nations Environment Programme & South Asia Co-operative Environment Programme. (2001). Sri Lanka: State of the environment, 2001. United Nations Environment Programme : Distributed by United Nations Environment Programme, Regional Resource Centre for Asia and the Pacific.

Citace podle Chicago (17th ed.)

United Nations Environment Programme a South Asia Co-operative Environment Programme. Sri Lanka: 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.

Citace podle MLA (8th ed.)

United Nations Environment Programme a South Asia Co-operative Environment Programme. Sri Lanka: State of the Environment, 2001. United Nations Environment Programme : Distributed by United Nations Environment Programme, Regional Resource Centre for Asia and the Pacific, 2001.

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