United Nations Environmental Programme & World Health Organization. (1992). Urban air pollution in megacities of the world: Earthwatch. Blackwell Publishers.
Chicago Style (17th ed.) CitationUnited Nations Environmental Programme and World Health Organization. Urban Air Pollution in Megacities of the World: Earthwatch. Oxford: Blackwell Publishers, 1992.
MLA (8th ed.) CitationUnited Nations Environmental Programme and World Health Organization. Urban Air Pollution in Megacities of the World: Earthwatch. Blackwell Publishers, 1992.
Warning: These citations may not always be 100% accurate.