Worldwatch Institute & Brown, L. (2000). State of the world 2000: A Worldwatch Institute report on progress toward a sustainable society. Norton.
Chicago-viite (17. p.)Worldwatch Institute ja LesterR Brown. State of the World 2000: A Worldwatch Institute Report on Progress Toward a Sustainable Society. New York, N.Y.: Norton, 2000.
MLA-viite (8. p.)Worldwatch Institute ja LesterR Brown. State of the World 2000: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Norton, 2000.
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