Worldwatch Institute & Brown, L. R. (1999). State of the world 1999: A Worldwatch Institute report on progress toward a sustainable society. W. W. Norton & Company.
Citação do estilo Chicago (17ª ed.)Worldwatch Institute e Lester Russell Brown. State of the World 1999: A Worldwatch Institute Report on Progress Toward a Sustainable Society. New York ; London: W. W. Norton & Company, 1999.
Citação MLA (8ª ed.)Worldwatch Institute e Lester Russell Brown. State of the World 1999: A Worldwatch Institute Report on Progress Toward a Sustainable Society. W. W. Norton & Company, 1999.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.