Cita APA

(1998). World resources 1998-1999: A guide to the global environment. New York: Oxford University Press.

Citación estilo Chicago

World Resources 1998-1999: A Guide to the Global Environment. New York: Oxford University Press, 1998.

Cita MLA

World Resources 1998-1999: A Guide to the Global Environment. New York: Oxford University Press, 1998.