APA (7th ed.) Citation

United Nations Environment Programme & World Health Organization. (1992). Urban air pollution in megacities of the world: Earthwatch. Published on behalf of World Health Organization and United Nations Environment Programme by Blackwell.

Chicago Style (17th ed.) Citation

United Nations Environment Programme and World Health Organization. Urban Air Pollution in Megacities of the World: Earthwatch. Oxford [England]: Published on behalf of World Health Organization and United Nations Environment Programme by Blackwell, 1992.

MLA (9th ed.) Citation

United Nations Environment Programme and World Health Organization. Urban Air Pollution in Megacities of the World: Earthwatch. Published on behalf of World Health Organization and United Nations Environment Programme by Blackwell, 1992.