Cita APA

Worldwatch Institute. (1993). State of the world: A Worldwatch Institute Report on Progress Toward a Sustainable Society. New York: W.W. Norton & company.

Citación estilo Chicago

Worldwatch Institute. State of the World: A Worldwatch Institute Report On Progress Toward a Sustainable Society. New York: W.W. Norton & company, 1993.

Cita MLA

Worldwatch Institute. State of the World: A Worldwatch Institute Report On Progress Toward a Sustainable Society. New York: W.W. Norton & company, 1993.