United Nations. Development Programme, World Resources Institute, United Nations Environment Programme, & World Bank. (2000). World resources: 2000/2001. World Resources Institute.
Style de citation Chicago (17e éd.)United Nations. Development Programme, World Resources Institute, United Nations Environment Programme, et World Bank. World Resources: 2000/2001. Washington, D.C.: World Resources Institute, 2000.
Style de citation MLA (9e éd.)United Nations. Development Programme, et al. World Resources: 2000/2001. World Resources Institute, 2000.
Attention : ces citations peuvent ne pas être correctes à 100%.