United States. National Aeronautics and Space Administration, United Nations Environment Programme, World Bank, & Watson, R. T. (1998). Protecting our planet, securing our future: Linkages among global environmental issues and human needs. United Nations Environment Programme.
Παραπομπή σε μορφή Chicago (17η εκδ.)United States. National Aeronautics and Space Administration, United Nations Environment Programme, World Bank, και Robert T. Watson. Protecting Our Planet, Securing Our Future: Linkages Among Global Environmental Issues and Human Needs. [Nairobi, Kenya?] : Washington, D.C. : U.S. National Aeronautics and Space Administration, and The World Bank: United Nations Environment Programme, 1998.
Παραπομπή σε μορφή MLA (8th εκδ.)United States. National Aeronautics and Space Administration, et al. Protecting Our Planet, Securing Our Future: Linkages Among Global Environmental Issues and Human Needs. United Nations Environment Programme, 1998.