(2003). State of the world 2003: A worldwatch institute report on progress towards a sustainable society (20th ed.). Earthscan.
Styl ChicagoState of the World 2003: A Worldwatch Institute Report on Progress Towards a Sustainable Society. 20th ed. London: Earthscan, 2003.
Citace podle MLAState of the World 2003: A Worldwatch Institute Report on Progress Towards a Sustainable Society. 20th ed. Earthscan, 2003.
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