Cita APA

Brown, L. R. (1990). State of the world: A Worldwatch Institute report on progress toward a sustainable society. W.W. Norton & Co.

Citación estilo Chicago

Brown, Lester R. State of the World: A Worldwatch Institute Report on Progress Toward a Sustainable Society. New York: W.W. Norton & Co, 1990.

Cita MLA

Brown, Lester R. State of the World: A Worldwatch Institute Report on Progress Toward a Sustainable Society. W.W. Norton & Co, 1990.