World Resources Institute, International Institute for Environment and Development, & United Nations Environment Programme. (1988). World resources 1988-89: A report. Basic Books.
Citazione stile Chigago Style (17a edizione)World Resources Institute, International Institute for Environment and Development, e United Nations Environment Programme. World Resources 1988-89: A Report. New York: Basic Books, 1988.
Citatione MLA (9a ed.)World Resources Institute, et al. World Resources 1988-89: A Report. Basic Books, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.