APA Citatie

Brown Lester R. (1997). State of the world 1997: A worldwatch institute report on progress toward a sustainable society. W W Norton&comp.

Chicago Style citaat

Brown Lester R. State of the World 1997: A Worldwatch Institute Report on Progress Toward a Sustainable Society. New York: W W Norton&comp, 1997.

MLA citatie

Brown Lester R. State of the World 1997: A Worldwatch Institute Report on Progress Toward a Sustainable Society. W W Norton&comp, 1997.