Cita APA (7th ed.)

Worldwatch Institute & Brown, L. (2000). State of the world 2000: A Worldwatch Institute report on progress toward a sustainable society. Norton.

Cita Chicago (17th ed.)

Worldwatch Institute i LesterR Brown. State of the World 2000: A Worldwatch Institute Report on Progress Toward a Sustainable Society. New York, N.Y.: Norton, 2000.

Cita MLA (8th ed.)

Worldwatch Institute i LesterR Brown. State of the World 2000: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Norton, 2000.