APA (7th ed.) Citation

Brown, L. R. (1993). State of the world 1993: A Worldwatch Institute report on progress toward a sustainable society. W. W. Norton.

Chicago Style (17th ed.) Citation

Brown, Lester Russell. State of the World 1993: A Worldwatch Institute Report on Progress Toward a Sustainable Society. New York: W. W. Norton, 1993.

MLA (9th ed.) Citation

Brown, Lester Russell. State of the World 1993: A Worldwatch Institute Report on Progress Toward a Sustainable Society. W. W. Norton, 1993.