APA (7th ed.) Citation

International Institute for Environmental Affairs. (1973). Who speaks for earth? ([1st ed.].). Norton.

Chicago Style (17th ed.) Citation

International Institute for Environmental Affairs. Who Speaks for Earth? [1st ed.]. New York: Norton, 1973.

MLA (9th ed.) Citation

International Institute for Environmental Affairs. Who Speaks for Earth? [1st ed.]. Norton, 1973.