APA (7e ed.) Bronvermelding

STATE. (1992). State of the world 1992: A worldwatch institute reporton progress toward a sustainable society. WW Norton and co.

Chicago (17e ed.) Bronvermelding

STATE. State of the World 1992: A Worldwatch Institute Reporton Progress Toward a Sustainable Society. New York: WW Norton and co, 1992.

MLA (9e ed.) Bronvermelding

STATE. State of the World 1992: A Worldwatch Institute Reporton Progress Toward a Sustainable Society. WW Norton and co, 1992.