United Nations. Environment Programme, GEMS Monitoring and Assessment Research Centre, World Resources Institute, & Great Britain. Department of the Environment. (1991). Environmental data report / prepared for UNEP by the GEMS Monitoring and Assessment Research Centre, London, UK in co-operation with the World Resources Institute, Washington DC, UK Department of the Environment, London (3rd ed.). Blackwell Reference.
Chicago Style (17th ed.) CitationUnited Nations. Environment Programme, GEMS Monitoring and Assessment Research Centre, World Resources Institute, and Great Britain. Department of the Environment. Environmental Data Report / Prepared for UNEP by the GEMS Monitoring and Assessment Research Centre, London, UK in Co-operation with the World Resources Institute, Washington DC, UK Department of the Environment, London. 3rd ed. Oxford: Blackwell Reference, 1991.
MLA (9th ed.) CitationUnited Nations. Environment Programme, et al. Environmental Data Report / Prepared for UNEP by the GEMS Monitoring and Assessment Research Centre, London, UK in Co-operation with the World Resources Institute, Washington DC, UK Department of the Environment, London. 3rd ed. Blackwell Reference, 1991.