Worldwatch Institute & Brown, L. R. (1998). State of the world 1998: A Worldwatch Institute report on progress toward a sustainable society. Earthscan ; Norton & company.
Chicago-Zitierstil (17. Ausg.)Worldwatch Institute und Lester Russell Brown. State of the World 1998: A Worldwatch Institute Report on Progress Toward a Sustainable Society. London: Earthscan ; Norton & company, 1998.
MLA-Zitierstil (8. Ausg.)Worldwatch Institute und Lester Russell Brown. State of the World 1998: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Earthscan ; Norton & company, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.