World Resources Institute, United Nations Environment Programme, & United Nations Development Programme. (1990). World resources. Oxford University Press.
Chicagoスタイル(17版)引用形式World Resources Institute, United Nations Environment Programme, , United Nations Development Programme. World Resources. New York: Oxford University Press, 1990.
MLA(8版)引用形式World Resources Institute, et al. World Resources. Oxford University Press, 1990.
警告: この引用は必ずしも正確ではありません.