Cita APA

Worldwatch Institute, Annan, K. A., Flavin, C., & Starke, L. (2002). State of the world, 2002: A Worldwatch Institute report on progress toward a sustainable society. Norton.

Citación estilo Chicago

Worldwatch Institute, Kofi A. Annan, Christopher Flavin, and Linda Starke. State of the World, 2002: A Worldwatch Institute Report on Progress Toward a Sustainable Society. New York: Norton, 2002.

Cita MLA

Worldwatch Institute, et al. State of the World, 2002: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Norton, 2002.