United Nations. Development Programme, World Resources Institute, United Nations Environment Programme, & World Bank. (2000). World resources: 2000/2001. World Resources Institute.
芝加哥风格引文United Nations. Development Programme, World Resources Institute, United Nations Environment Programme, 与 World Bank. World Resources: 2000/2001. Washington, D.C.: World Resources Institute, 2000.
MLA引文United Nations. Development Programme, et al. World Resources: 2000/2001. World Resources Institute, 2000.
警告：这些引文格式不一定是100％准确.