Worldwatch Institute & Brown, L. R. (1988). State of the world 2001: A Worldwatch Institute report on progress toward a sustainable society. Earthscan.
Citação do estilo Chicago (17ª ed.)Worldwatch Institute e Lester Russell Brown. State of the World 2001: A Worldwatch Institute Report on Progress Toward a Sustainable Society. London: Earthscan, 1988.
Citação MLA (9ª ed.)Worldwatch Institute e Lester Russell Brown. State of the World 2001: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Earthscan, 1988.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.